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Posted: 5/1/2024 1:59:48 PM EDT
[Last Edit: Romano316]
Thanks for looking.
I am putting together a 10.5” suppressed SBR and would like some help selecting the barrel. My priorities are: 1. 1/2”-28 threads concentric to the bore. 2.Correctly sized gas fort for dedicated suppressed use (AAC SR5 suppressor with muzzle break QD attachment) 3.Would prefer the cost under $300, bonus if the package includes a low profile gas block. 4.Lower has A5 receiver extension, sprinco green spring, and A5-2 weight buffer. 5.I shoot this with a 2 MOA RDS, so I do not need a super accurate barrel. 1.5-2.0 MOA would be perfectly fine for me. ETA: no pencil/ lightweight barrels please. Thank you for your time. |
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Posted: 5/1/2024 2:32:35 PM EDT
[#1]
www.righttobear.com has a ton of their Aero Precision (Ballistic Advantage) barrels on sale right now.
https://www.righttobear.com/aero-precision-10-5-5-56-cmv-barrel-carbine-length/ As for ported for suppression, if you're that worried about it you'll need to put a low profile adjustable gas block on there. I've never done anything like that, I have 2 12.5 BA barrels both run suppressed with standard GB's and it works just fine *shrug* |
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Posted: 5/1/2024 3:01:40 PM EDT
[#2]
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NC, USA
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Posted: 5/1/2024 3:04:16 PM EDT
[#3]
Not a knock on BA but in my experience, a lot of the lower and mid tier barrels suffer in regards to concentricity. If it’s for a dedicated suppressor build I buy quality 16” barrels and have my smith cut them down and thread them.
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Posted: 5/1/2024 3:10:25 PM EDT
[#4]
Quote HistoryOriginally Posted By JustDaniel: Not a knock on BA but in my experience, a lot of the lower and mid tier barrels suffer in regards to concentricity. If it’s for a dedicated suppressor build I buy quality 16” barrels and have my smith cut them down and thread them. ADCO cut my last barrel, zero problems. |
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NC, USA
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Posted: 5/1/2024 3:35:07 PM EDT
[#5]
Quote HistoryOriginally Posted By Romano316: ADCO cut my last barrel, zero problems. Quote HistoryOriginally Posted By Romano316: Originally Posted By JustDaniel: Not a knock on BA but in my experience, a lot of the lower and mid tier barrels suffer in regards to concentricity. If it’s for a dedicated suppressor build I buy quality 16” barrels and have my smith cut them down and thread them. ADCO cut my last barrel, zero problems. Yep he’s done a couple for me as well, when my smith was backed up. A couple P/W barrels also. Always great work and a quick turnaround |
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Posted: 5/1/2024 4:17:16 PM EDT
[Last Edit: WUPHF]
[#6]
Splurge a little more and get a CHF Centurion Arms barrel with their tabbed gas block.
https://centurionarms.com/barrels/midweight-hammer-forged-barrel-carbine/ If you really want to stay under $300, they have a non CHF barrel for about $100 less. https://centurionarms.com/barrels/crmov-midweight-carbine/ Both have an appropriately sized gas port (one of only a few who actually advertise their gas port sizes) and the tabbed gas block feature should become the standard for how simple and ingenious it is. |
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Posted: 5/1/2024 6:16:53 PM EDT
[Last Edit: TGWLDR]
[#7]
IF it were me, I'd stretch the budget a bit and order THIS
Excellent barrel life, accurate, proven, and gassed correctly. If more gas restriction is deemed necessary I'd throw a BRT EZ Tune in it or a reduced GP gas block. |
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Posted: 5/1/2024 6:35:17 PM EDT
[#8]
The Colt barrel is gassed properly for suppressed and unsuppressed use and therefore you don’t need to use an adjustable gas block.
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Posted: 5/1/2024 6:39:39 PM EDT
[#9]
Thanks for the replies so far.
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MI, USA
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Posted: 5/1/2024 7:23:38 PM EDT
[#10]
Criterion hybrid 10.5
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Posted: 5/1/2024 7:30:49 PM EDT
[#11]
Quote HistoryOriginally Posted By Ryan_Scott: The Colt barrel is gassed properly for suppressed and unsuppressed use and therefore you don’t need to use an adjustable gas block. While accurate, further mitigation of gas while supressed is beneficial. |
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Posted: 5/1/2024 7:48:36 PM EDT
[#12]
Quote HistoryOriginally Posted By TGWLDR: While accurate, further mitigation of gas while supressed is beneficial. There are very few adjustable gas ports that you can switch to different gas settings on the fly, and even then I don’t trust them. If you want a suppressed 10.5, buy one with about a .050” gas port and rocksett the can. Problem solved. |
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Posted: 5/1/2024 7:58:12 PM EDT
[#13]
Quote HistoryOriginally Posted By Ryan_Scott: There are very few adjustable gas ports that you can switch to different gas settings on the fly, and even then I don’t trust them. If you want a suppressed 10.5, buy one with about a .050” gas port and rocksett the can. Problem solved. Quote HistoryOriginally Posted By Ryan_Scott: Originally Posted By TGWLDR: While accurate, further mitigation of gas while supressed is beneficial. There are very few adjustable gas ports that you can switch to different gas settings on the fly, and even then I don’t trust them. If you want a suppressed 10.5, buy one with about a .050” gas port and rocksett the can. Problem solved. I'm not talking about adjustable anything. I'm saying that if a 0.070" gas port diameter is deemed to be excessive in a rig by the shooter that options are available to further reduce gas. For example a reduced GP gas tube or gas block. A middle ground is achievable. |
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MN, USA
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Posted: 5/1/2024 8:10:55 PM EDT
[#14]
Quote HistoryOriginally Posted By Ryan_Scott: The Colt barrel is gassed properly for suppressed and unsuppressed use and therefore you don’t need to use an adjustable gas block. It cannot be optimized for both. |
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Posted: 5/1/2024 8:20:55 PM EDT
[#15]
Quote HistoryOriginally Posted By s4s4u: It cannot be optimized for both. Right, it’s gassed to be used unsuppressed but as small as they comfortably can so that it’s not as bad as it could be suppressed. |
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Posted: 5/1/2024 8:22:53 PM EDT
[#16]
Quote HistoryOriginally Posted By TGWLDR: I'm not talking about adjustable anything. I'm saying that if a 0.070" gas port diameter is deemed to be excessive in a rig by the shooter that options are available to further reduce gas. For example a reduced GP gas tube or gas block. A middle ground is achievable. Those gas ports erode rapidly. A middle ground isn’t possible, Colts are .070 and by .063 that gun won’t run outside in the summer. You either run it as is or you need a gas port for suppressed use only. |
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Posted: 5/1/2024 8:28:38 PM EDT
[#17]
Does Sionics have a 10.5? If so go with them.
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Posted: 5/1/2024 8:30:19 PM EDT
[#18]
Quote HistoryOriginally Posted By Ryan_Scott: Those gas ports erode rapidly. A middle ground isn’t possible, Colts are .070 and by .063 that gun won’t run outside in the summer. You either run it as is or you need a gas port for suppressed use only. Quote HistoryOriginally Posted By Ryan_Scott: Originally Posted By TGWLDR: I'm not talking about adjustable anything. I'm saying that if a 0.070" gas port diameter is deemed to be excessive in a rig by the shooter that options are available to further reduce gas. For example a reduced GP gas tube or gas block. A middle ground is achievable. Those gas ports erode rapidly. A middle ground isn’t possible, Colts are .070 and by .063 that gun won’t run outside in the summer. You either run it as is or you need a gas port for suppressed use only. I know several that run Colt short barrels with 50/50 mixed supressed/unsupressed issue free using the BRT tubes in S/A use. I've yet to see any issues personally. What gas port erosion are you referring to? The barrels themselves? If so, yeah erosion is accelerated in the short barrels. What issues are you referring to regarding the guns not running outdoors in the summer? |
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Posted: 5/1/2024 8:31:54 PM EDT
[#19]
Quote HistoryOriginally Posted By StillGonnaSendIt: Does Sionics have a 10.5? If so go with them. AFAIK, 11.5" is the shortest length. Nice barrels, good shooters. |
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Posted: 5/1/2024 8:37:17 PM EDT
[#20]
Quote HistoryOriginally Posted By TGWLDR: AFAIK, 11.5" is the shortest length. Nice barrels, good shooters. Yeah just double checked. Their silencer dedicated and reduced gas port barrels are awesome! Going to probably get a 14.8 silencer dedicated for my Saker 556 that stays on a 14.5” gun as it is now. |
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Posted: 5/1/2024 8:37:31 PM EDT
[#21]
I will tell you, I've had nothing but good luck with Aero/BA barrels. Not only with accuracy, but also suppressed. I've got a 10" 300blk and a 10.5" 5.56 and neither require an adjustable gas block. Both run great suppressed and not. Never a hiccup, and one has a bit of rounds through it.
It's funny, people suggest an adjustable gas block if running suppressed. It's been the only time I had issues, and turns out it was the gas block. |
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Posted: 5/1/2024 8:42:40 PM EDT
[#22]
Quote HistoryOriginally Posted By s4s4u: It cannot be optimized for both. Maybe? My experience first hand experience has been that (apparently?) proper gas port size combined with a good buffer seems to yield the same results from a variety of barrels. To include: Aero/BA CMMG Triarc Rainier Arms All of the above have worked suppressed or not, with no malfunctions. |
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Posted: 5/1/2024 8:43:45 PM EDT
[#23]
Quote HistoryOriginally Posted By TGWLDR: I know several that run Colt short barrels with 50/50 mixed supressed/unsupressed issue free using the BRT tubes in S/A use. I've yet to see any issues personally. What gas port erosion are you referring to? The barrels themselves? If so, yeah erosion is accelerated in the short barrels. What issues are you referring to regarding the guns not running outdoors in the summer? The gas ports in the gas tube. In any case orifice/port length matters too—the shorter the produce the smaller its diameter for the same flow. A 10.5” barrel with a .063” port will not run even in favorable atmospheric conditions, per my experience. |
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VA, USA
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Posted: 5/1/2024 8:44:31 PM EDT
[#24]
I have a Colt 10.3 w/ Geissele gas block pinned that I’m ready to sell. Message if interested.
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Posted: 5/1/2024 8:45:13 PM EDT
[#25]
Quote HistoryOriginally Posted By Ryan_Scott: Those gas ports erode rapidly.. Honest question, but how rapidly? Generally speaking? |
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Posted: 5/1/2024 8:47:30 PM EDT
[#26]
Quote HistoryOriginally Posted By WUPHF: Splurge a little more and get a CHF Centurion Arms barrel with their tabbed gas block. https://centurionarms.com/barrels/midweight-hammer-forged-barrel-carbine/ If you really want to stay under $300, they have a non CHF barrel for about $100 less. https://centurionarms.com/barrels/crmov-midweight-carbine/ Both have an appropriately sized gas port (one of only a few who actually advertise their gas port sizes) and the tabbed gas block feature should become the standard for how simple and ingenious it is. this is the answer |
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Posted: 5/1/2024 8:49:43 PM EDT
[#27]
Quote HistoryOriginally Posted By GunsAndGoats: Honest question, but how rapidly? Generally speaking? Quote HistoryOriginally Posted By GunsAndGoats: Originally Posted By Ryan_Scott: Those gas ports erode rapidly.. Honest question, but how rapidly? Generally speaking? Haven’t used them myself but the threads in the suppressor for them have recommended buying spares because people have worn them out. About what you’d expect given the physics involved. |
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Posted: 5/1/2024 8:53:21 PM EDT
[#28]
Almost slipped my mind!
Check out Rosco and their offerings! |
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Posted: 5/1/2024 8:56:17 PM EDT
[#29]
Quote HistoryOriginally Posted By GunsAndGoats: Honest question, but how rapidly? Generally speaking? Quote HistoryOriginally Posted By GunsAndGoats: Originally Posted By Ryan_Scott: Those gas ports erode rapidly.. Honest question, but how rapidly? Generally speaking? Last that I saw Clint from BRT state, average testing in 100% supressed firing showed no change in spec after 5K rounds. His webpage now states a lifespan of "~10K rounds". What that entails, I couldn't say. |
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MT, USA
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Posted: 5/1/2024 9:01:00 PM EDT
[#30]
Quote HistoryOriginally Posted By Ryan_Scott: The gas ports in the gas tube. In any case orifice/port length matters too the shorter the produce the smaller its diameter for the same flow. A 10.5" barrel with a .063" port will not run even in favorable atmospheric conditions, per my experience. I have a 10.3" Geissele barrel that has a factory gas port of .063". It runs and locks back unsuppressed with 5.56 ammo and a carbine buffer in summer and runs in winter but doesn't always lock back. However, it wears a suppressor at all times other than the times I've tested it for function. It normally has a Super 42/H3 combo in it. |
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Posted: 5/1/2024 9:01:48 PM EDT
[#31]
Quote HistoryOriginally Posted By Ryan_Scott: A 10.5” barrel with a .063” port will not run even in favorable atmospheric conditions, per my experience. 0.068" with full power 5.56 is the smallest that I've tried w/o a supressor, which was fine. For a dedicated supressor gun, you are saying that 0.063" will not cycle? |
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Posted: 5/1/2024 9:05:32 PM EDT
[Last Edit: RDTCU]
[#32]
Recently pcked up a clearance Black Rain 10.5 SS barrel for similar purposes for $100, am happy with it so far.
Medium profile, good concentricity, good accuracy. Not intended as a high volume mag dumping build... |
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Posted: 5/1/2024 9:07:05 PM EDT
[#33]
Quote HistoryOriginally Posted By TGWLDR: 0.068" with full power 5.56 is the smallest that I've tried w/o a supressor, which was fine. For a dedicated supressor gun, you are saying that 0.063" will not cycle? Wouldn’t cycle unsuppressed, overgassed badly suppressed. Albeit with about a 2010 AAC Ranger 2 backpressure generator. |
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MT, USA
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Posted: 5/1/2024 9:07:23 PM EDT
[#34]
I'll also add I have a Geissele 12.5" carbine barrel with .0615" gas port equivalent BRT tube. Runs even in winter without a suppressor with a Super 42/H2, however, it doesn't lock back unsuppressed when it's cold. It does during the summer. Again though, this one is always shot with a suppressor.
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Posted: 5/1/2024 9:10:19 PM EDT
[#35]
Quote HistoryOriginally Posted By spyderboy03: The BRT gas tubes are capable of going 10k rounds without much erosion per their site. I have a 10.3" Geissele barrel that has a factory gas port of .063". It runs and locks back unsuppressed with 5.56 ammo and a carbine buffer in summer and runs in winter but doesn't always lock back. However, it wears a suppressor at all times other than the times I've tested it for function. It normally has a Super 42/H3 combo in it. I’m sure with the right set up and a delicate firing schedule that’s true. Keep in mind though that a 10.5 USGI barrel has a life of about 5k rounds if you’re on top of replacements. I had a 10.5” Colt with a .063” port cut down from a 16” and it wouldn’t cycle in tee shirt weather. Geissele’s site claims .075” gas ports for their 10.5s btw. |
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Posted: 5/1/2024 9:11:15 PM EDT
[#36]
Quote HistoryOriginally Posted By spyderboy03: I'll also add I have a Geissele 12.5" carbine barrel with .0615" gas port equivalent BRT tube. Runs even in winter without a suppressor with a Super 42/H2, however, it doesn't lock back unsuppressed when it's cold. It does during the summer. Again though, this one is always shot with a suppressor. .063 is in the zone for a 12.5 carbine. |
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Posted: 5/1/2024 9:11:55 PM EDT
[Last Edit: ScaryGary]
[#37]
Rainier or DD
I ended up with 11.5 though  |
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Posted: 5/1/2024 9:12:29 PM EDT
[#38]
Quote HistoryOriginally Posted By Ryan_Scott: I’m sure with the right set up and a delicate firing schedule that’s true. Keep in mind though that a 10.5 USGI barrel has a life of about 5k rounds if you’re on top of replacements. I had a 10.5” Colt with a .063” port cut down from a 16” and it wouldn’t cycle in tee shirt weather. Geissele’s site claims .075” gas ports for their 10.5s btw. Quote HistoryOriginally Posted By Ryan_Scott: Originally Posted By spyderboy03: The BRT gas tubes are capable of going 10k rounds without much erosion per their site. I have a 10.3" Geissele barrel that has a factory gas port of .063". It runs and locks back unsuppressed with 5.56 ammo and a carbine buffer in summer and runs in winter but doesn't always lock back. However, it wears a suppressor at all times other than the times I've tested it for function. It normally has a Super 42/H3 combo in it. I’m sure with the right set up and a delicate firing schedule that’s true. Keep in mind though that a 10.5 USGI barrel has a life of about 5k rounds if you’re on top of replacements. I had a 10.5” Colt with a .063” port cut down from a 16” and it wouldn’t cycle in tee shirt weather. Geissele’s site claims .075” gas ports for their 10.5s btw. I believe that is only for component barrels. Complete 10.3” SD guns/uppers have the .063 port. |
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Posted: 5/1/2024 9:15:57 PM EDT
[#39]
Quote HistoryOriginally Posted By WUPHF: I believe that is only for component barrels. Complete 10.3” SD guns/uppers have the .063 port. Quote HistoryOriginally Posted By WUPHF: Originally Posted By Ryan_Scott: Originally Posted By spyderboy03: The BRT gas tubes are capable of going 10k rounds without much erosion per their site. I have a 10.3" Geissele barrel that has a factory gas port of .063". It runs and locks back unsuppressed with 5.56 ammo and a carbine buffer in summer and runs in winter but doesn't always lock back. However, it wears a suppressor at all times other than the times I've tested it for function. It normally has a Super 42/H3 combo in it. I’m sure with the right set up and a delicate firing schedule that’s true. Keep in mind though that a 10.5 USGI barrel has a life of about 5k rounds if you’re on top of replacements. I had a 10.5” Colt with a .063” port cut down from a 16” and it wouldn’t cycle in tee shirt weather. Geissele’s site claims .075” gas ports for their 10.5s btw. I believe that is only for component barrels. Complete 10.3” SD guns/uppers have the .063 port. Website lists them at .070 which is what Crane picked. |
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Posted: 5/1/2024 9:19:55 PM EDT
[#40]
So I guess this begs a question from me. Can you get 100% reliability in a barrel suppressed and unsupresed? Or do you have to pick one? I personally don’t mind gas to the face but I sometimes like the option of taking suppressor off. My 14.5” BCM P&W seems to run fine suppressed and unsunpressed with standard carbine buffer and spring and a standard mk12 spec gas block that was $10 at B Kings. Am I risking anything? Should I try a different spring?
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Posted: 5/1/2024 9:25:27 PM EDT
[#41]
Reliability? Yes. Longevity? No.
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Posted: 5/1/2024 9:30:24 PM EDT
[Last Edit: WUPHF]
[#42]
Quote HistoryOriginally Posted By StillGonnaSendIt: So I guess this begs a question from me. Can you get 100% reliability in a barrel suppressed and unsupresed? Or do you have to pick one? I personally don’t mind gas to the face but I sometimes like the option of taking suppressor off. My 14.5” BCM P&W seems to run fine suppressed and unsunpressed with standard carbine buffer and spring and a standard mk12 spec gas block that was $10 at B Kings. Am I risking anything? Should I try a different spring? I’m not trying to be a dick, but you yourself are saying it runs fine both suppressed and unsuppressed, so why are you asking us? If it runs fine, it runs fine. And yes, you can get reliability with both. Most suppressed AR pattern rifles in DoD hands do so without adjustable gas and function fine in both. Don’t overthink yourself into changing stuff up on a functioning gun. Use your own personal data and experiences you have using your gun and make any needed changes based off that. |
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Posted: 5/1/2024 9:31:31 PM EDT
[#43]
Quote HistoryOriginally Posted By Ryan_Scott: Reliability? Yes. Longevity? No. Saying no to “longevity” is a pointless claim without also citing what metrics you use to quantify longevity. |
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Posted: 5/1/2024 9:33:34 PM EDT
[Last Edit: WUPHF]
[#44]
Quote HistoryOriginally Posted By Ryan_Scott: Website lists them at .070 which is what Crane picked. Quote HistoryOriginally Posted By Ryan_Scott: Originally Posted By WUPHF: Originally Posted By Ryan_Scott: Originally Posted By spyderboy03: The BRT gas tubes are capable of going 10k rounds without much erosion per their site. I have a 10.3" Geissele barrel that has a factory gas port of .063". It runs and locks back unsuppressed with 5.56 ammo and a carbine buffer in summer and runs in winter but doesn't always lock back. However, it wears a suppressor at all times other than the times I've tested it for function. It normally has a Super 42/H3 combo in it. I’m sure with the right set up and a delicate firing schedule that’s true. Keep in mind though that a 10.5 USGI barrel has a life of about 5k rounds if you’re on top of replacements. I had a 10.5” Colt with a .063” port cut down from a 16” and it wouldn’t cycle in tee shirt weather. Geissele’s site claims .075” gas ports for their 10.5s btw. I believe that is only for component barrels. Complete 10.3” SD guns/uppers have the .063 port. Website lists them at .070 which is what Crane picked. Maybe I’m wildly misremembering something, or maybe they upped the port size. I could have sworn they were .063 at one point. ETA: Looks like they upped the port size. https://www.ar15.com/forums/General/-ARCHIVED-THREAD-Am-I-reading-this-right-Geissele-10-3-barrel-has-a-063-gas-port-/5-2611231/?page=1 |
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Posted: 5/1/2024 9:43:59 PM EDT
[#45]
Quote HistoryOriginally Posted By TGWLDR: IF it were me, I'd stretch the budget a bit and order THIS Excellent barrel life, accurate, proven, and gassed correctly. If more gas restriction is deemed necessary I'd throw a BRT EZ Tune in it or a reduced GP gas block.
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Posted: 5/1/2024 9:47:02 PM EDT
[Last Edit: lazyengineer]
[#46]
My PSA basic malonoted one lasted over 11,000 rounds and ran everything. Fast powder, light bullets, heavy bullets suppressed, not supressed. It just ran.
Do that. |
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Posted: 5/1/2024 10:01:55 PM EDT
[#47]
Quote HistoryOriginally Posted By tortilla-flats: Ay Carumba! Another Colt vendor to track. Quote HistoryOriginally Posted By tortilla-flats: Originally Posted By TGWLDR: IF it were me, I'd stretch the budget a bit and order THIS Excellent barrel life, accurate, proven, and gassed correctly. If more gas restriction is deemed necessary I'd throw a BRT EZ Tune in it or a reduced GP gas block. HERE'S ANOTHER and better pricing. 
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MT, USA
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Posted: 5/1/2024 10:05:22 PM EDT
[#48]
Quote HistoryOriginally Posted By WUPHF: Maybe I'm wildly misremembering something, or maybe they upped the port size. I could have sworn they were .063 at one point. ETA: Looks like they upped the port size. https://www.ar15.com/forums/General/-ARCHIVED-THREAD-Am-I-reading-this-right-Geissele-10-3-barrel-has-a-063-gas-port-/5-2611231/?page=1 Quote HistoryOriginally Posted By WUPHF: Originally Posted By Ryan_Scott: Originally Posted By WUPHF: Originally Posted By Ryan_Scott: Originally Posted By spyderboy03: The BRT gas tubes are capable of going 10k rounds without much erosion per their site. I have a 10.3" Geissele barrel that has a factory gas port of .063". It runs and locks back unsuppressed with 5.56 ammo and a carbine buffer in summer and runs in winter but doesn't always lock back. However, it wears a suppressor at all times other than the times I've tested it for function. It normally has a Super 42/H3 combo in it. I'm sure with the right set up and a delicate firing schedule that's true. Keep in mind though that a 10.5 USGI barrel has a life of about 5k rounds if you're on top of replacements. I had a 10.5" Colt with a .063" port cut down from a 16" and it wouldn't cycle in tee shirt weather. Geissele's site claims .075" gas ports for their 10.5s btw. I believe that is only for component barrels. Complete 10.3" SD guns/uppers have the .063 port. Website lists them at .070 which is what Crane picked. Maybe I'm wildly misremembering something, or maybe they upped the port size. I could have sworn they were .063 at one point. ETA: Looks like they upped the port size. https://www.ar15.com/forums/General/-ARCHIVED-THREAD-Am-I-reading-this-right-Geissele-10-3-barrel-has-a-063-gas-port-/5-2611231/?page=1 Correct, they've changed both rifles/pistols and standalone barrels a few times now. They have advertised 10.3" barrels with .070, .063, and now .075 gas ports. I got mine in December of 2022. A 1/16" drill bit barely fit in the gas port and had to be convinced to go in. |
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VA, USA
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Posted: 5/1/2024 10:35:27 PM EDT
[#49]
Psa/fn chf cl 10.5. You could probably get an upper for your budget.
Mine is a blast suppressed. |
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Posted: 5/1/2024 10:48:46 PM EDT
[Last Edit: WUPHF]
[#50]
Quote HistoryOriginally Posted By hodgescl: Psa/fn chf cl 10.5. You could probably get an upper for your budget. Mine is a blast suppressed. I have a slightly older PSA Premium CHF 10.5” barrel and it sports a .075” gas port. I’d want something smaller for primarily suppressed use. I use a BRT tube with mine. |
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