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Posted: 1/21/2024 4:51:58 PM EDT
[#1]
Quote HistoryOriginally Posted By scottMO: Is the 507K a direct mount, as the 507c has a plate that goes with it adding to the weight? Quote HistoryOriginally Posted By scottMO: Originally Posted By towerofpower94: Originally Posted By HK_DUDE: I would remove the optic and test. Then buy a 507K for it. That's not what you want to hear, but that is where I would start. What he said. Optic off and then try with and without the can. The RMR at 1.2oz is about as heavy as you want to go, especially is you’re using weaker ammo like the AE 40gr FMJ loads. Sorry, replied to the other guy while you were typing. I wouldn’t mess with cutting coils off the recoil spring as I imagine you’d end up with a pistol that would fail to strip rounds off the mag and failures to go into battery. Once I switched from a 2oz 508T to a 1.2oz RMR my Rock started working fine with and without the Spectre II on the end. Is the 507K a direct mount, as the 507c has a plate that goes with it adding to the weight? Yes, it is.  Attached File Attached File |
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WA, USA
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Posted: 1/23/2024 1:05:12 PM EDT
[#2]
The 507K is a direct mount. The plate adds .3 oz to the weight of the red dot and causes cycling problems with most of the red dots that weigh over 1 oz.
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Posted: 1/23/2024 1:28:07 PM EDT
[Last Edit: RDTCU]
[#3]
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Posted: 1/23/2024 1:58:31 PM EDT
[#4]
Quote HistoryOriginally Posted By RDTCU: Related from SHOT '24 PSA X57 https://www.ar15.com/media/mediaFiles/173511/1000003031_jpg-3104635.JPG Do want! |
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Posted: 1/23/2024 2:17:44 PM EDT
[#5]
Quote HistoryOriginally Posted By DWFAN: Do want! Quote HistoryOriginally Posted By DWFAN: Originally Posted By RDTCU: Related from SHOT '24 PSA X57 https://www.ar15.com/media/mediaFiles/173511/1000003031_jpg-3104635.JPG Do want! Same. Will pick it up along with a couple 40rd mags and do a 2gun match with them 
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Posted: 1/24/2024 1:37:44 AM EDT
[#6]
Will the X57 magazines fit the Rock and vice versa?
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Posted: 1/24/2024 8:36:11 AM EDT
[#7]
Quote HistoryOriginally Posted By 45BArmorer: Will the X57 magazines fit the Rock and vice versa? They look the same to me. It would be a tremendous mistake if they aren't interchangeable. |
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Posted: 1/24/2024 9:54:54 AM EDT
[#8]
Quote HistoryOriginally Posted By 45BArmorer: Will the X57 magazines fit the Rock and vice versa? Sounds like they will. |
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Posted: 1/24/2024 11:01:04 AM EDT
[#9]
Quote HistoryOriginally Posted By RDTCU: Related from SHOT '24 PSA X57 https://www.ar15.com/media/mediaFiles/173511/1000003031_jpg-3104635.JPG Please tell me it is ambi!!! |
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Posted: 1/24/2024 3:35:10 PM EDT
[#10]
Quote HistoryOriginally Posted By RDTCU: Related from SHOT '24 PSA X57 https://www.ar15.com/media/mediaFiles/173511/1000003031_jpg-3104635.JPG |
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Posted: 1/24/2024 3:44:30 PM EDT
[#11]
Quote HistoryOriginally Posted By November5: Huge disappointment. I wanted purpose built, preferably gas operated, not a Rock in a shell. Quote HistoryOriginally Posted By November5: Originally Posted By RDTCU: Related from SHOT '24 PSA X57 https://www.ar15.com/media/mediaFiles/173511/1000003031_jpg-3104635.JPG I think gas operated would be tough for such a small case, no? |
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Posted: 1/24/2024 3:50:45 PM EDT
[#12]
Quote HistoryOriginally Posted By towerofpower94: I think gas operated would be tough for such a small case, no? Quote HistoryOriginally Posted By towerofpower94: Originally Posted By November5: Originally Posted By RDTCU: Related from SHOT '24 PSA X57 https://www.ar15.com/media/mediaFiles/173511/1000003031_jpg-3104635.JPG I think gas operated would be tough for such a small case, no? |
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Posted: 1/24/2024 4:13:40 PM EDT
[#13]
Quote HistoryOriginally Posted By November5: Huge disappointment. I wanted purpose built, preferably gas operated, not a Rock in a shell. Apparently it shares some Rock parts but it's not just a shell. What you see is just a 3D printed prototype anyway. |
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Posted: 1/24/2024 4:18:01 PM EDT
[Last Edit: RDTCU]
[#14]
Quote HistoryOriginally Posted By November5: The MP7 does it with an even smaller case. 4.6 service pressure is 58ksi, vs 50ksi for 5.7. I'm sure it could be done but not a huge need IMO. Diamondback did it with the DBX57 and twin pistons. |
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Posted: 1/24/2024 4:41:07 PM EDT
[#15]
Quote HistoryOriginally Posted By RDTCU: Apparently it shares some Rock parts but it's not just a shell. What you see is just a 3D printed prototype anyway. Quote HistoryOriginally Posted By RDTCU: Originally Posted By November5: Huge disappointment. I wanted purpose built, preferably gas operated, not a Rock in a shell. Apparently it shares some Rock parts but it's not just a shell. What you see is just a 3D printed prototype anyway. |
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Posted: 1/24/2024 8:45:25 PM EDT
[#16]
Would it be viable to mill an ounce out of the rock slide to offset the optic weight?
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Posted: 1/24/2024 8:50:48 PM EDT
[#17]
Quote HistoryOriginally Posted By bradpierson26: Would it be viable to mill an ounce out of the rock slide to offset the optic weight? |
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Posted: 2/14/2024 9:11:02 PM EDT
[Last Edit: scottMO]
[#18]
Quote HistoryOriginally Posted By scottMO: Used PSA Rock Cycling Problems- Outing 1-AE Red Box. Wouldn’t cycle rounds, (wouldn’t eject the empty). Hand cycled and repeat. Outing 2- AE red box. Added a dead air mask to hopefully help with back pressure? Same issue. Outing 3- Fiochhi and FN blue tip 197 ammo. Dead air mask used. Same issue. Double checked the seating of the recoil assembly and everything looks fine? Question- is the 2nd photo correct? It the pin in the recoil did supposed to be depressed and locked behind the lug or the recoil rod supposed to be sitting not so deep and the pin is supposed to be sticking out? I do have a holosun 507C on the slide, but I don’t think it should make any difference because that’s one of the acceptable optics for that gun. Any ideas? I did not shoot the gun before I put the optic on it, so I can’t confirm how it shoots without the optic or less anybody has some better ideas that’s going to be the next test is remove the optic and see how it shoots then. This gun came to me used, and of course the seller indicated no issues when they sold it to me. I’m finally getting around to shooting it now and discovering the issues. https://www.ar15.com/media/mediaFiles/2158/IMG_6705_jpeg-3102271.JPGhttps://www.ar15.com/media/mediaFiles/2158/IMG_6706_jpeg-3102272.JPGhttps://www.ar15.com/media/mediaFiles/2158/IMG_6707_jpeg-3102273.JPG Ended up sending in my 5.7 Rock and my extractor was replaced and the gun now runs excellent, even with an optic! I’m not sure how the bad/old extractor affected/slowed down the action, but I’m happy! Turn around time was 2 weeks and comms were great! |
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Posted: 2/15/2024 7:53:34 AM EDT
[#19]
Quote HistoryOriginally Posted By scottMO: Ended up sending in my 5.7 Rock and my extractor was replaced and the gun now runs excellent, even with an optic! I’m not sure how the bad/old extractor affected/slowed down the action, but I’m happy! Turn around time was 2 weeks and comms were great! Quote HistoryOriginally Posted By scottMO: Originally Posted By scottMO: Used PSA Rock Cycling Problems- Outing 1-AE Red Box. Wouldn’t cycle rounds, (wouldn’t eject the empty). Hand cycled and repeat. Outing 2- AE red box. Added a dead air mask to hopefully help with back pressure? Same issue. Outing 3- Fiochhi and FN blue tip 197 ammo. Dead air mask used. Same issue. Double checked the seating of the recoil assembly and everything looks fine? Question- is the 2nd photo correct? It the pin in the recoil did supposed to be depressed and locked behind the lug or the recoil rod supposed to be sitting not so deep and the pin is supposed to be sticking out? I do have a holosun 507C on the slide, but I don’t think it should make any difference because that’s one of the acceptable optics for that gun. Any ideas? I did not shoot the gun before I put the optic on it, so I can’t confirm how it shoots without the optic or less anybody has some better ideas that’s going to be the next test is remove the optic and see how it shoots then. This gun came to me used, and of course the seller indicated no issues when they sold it to me. I’m finally getting around to shooting it now and discovering the issues. https://www.ar15.com/media/mediaFiles/2158/IMG_6705_jpeg-3102271.JPGhttps://www.ar15.com/media/mediaFiles/2158/IMG_6706_jpeg-3102272.JPGhttps://www.ar15.com/media/mediaFiles/2158/IMG_6707_jpeg-3102273.JPG Ended up sending in my 5.7 Rock and my extractor was replaced and the gun now runs excellent, even with an optic! I’m not sure how the bad/old extractor affected/slowed down the action, but I’m happy! Turn around time was 2 weeks and comms were great! Glad to hear. I wonder if it was rubbing on the inside of the slide, robbing energy. That would explain your issues. |
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Posted: 3/1/2024 5:56:42 PM EDT
[#20]
Dumb question but is the optic already installed or do I have to install it?
https://palmettostatearmory.com/psa-5-7-rock-optics-ready-pistol-with-threaded-barrel-holosun-407k-reflex-sight-two-tone-sniper-green.html?qty=1 |
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Posted: 3/1/2024 6:28:11 PM EDT
[#21]
Quote HistoryOriginally Posted By ZF-1: Dumb question but is the optic already installed or do I have to install it? https://palmettostatearmory.com/psa-5-7-rock-optics-ready-pistol-with-threaded-barrel-holosun-407k-reflex-sight-two-tone-sniper-green.html?qty=1 |
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WA, USA
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Posted: 3/7/2024 1:27:09 PM EDT
[#22]
Be aware that the 12mm long m4 mounting screws included with all of the 407K and 507K sights are too long to Mount the sights on a Rock without them damaging the striker assembly when fully tightened down. They must be shortened to no longer than 10mm to clear the striker assembly.
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Posted: 3/8/2024 4:44:16 PM EDT
[#23]
Quote HistoryOriginally Posted By County804: Be aware that the 12mm long m4 mounting screws included with all of the 407K and 507K sights are too long to Mount the sights on a Rock without them damaging the striker assembly when fully tightened down. They must be shortened to no longer than 10mm to clear the striker assembly. Does PSA include the correct screws or do I have to wreck the 12mm screws myself? |
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WA, USA
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Posted: 3/9/2024 4:54:01 PM EDT
[Last Edit: County804]
[#24]
When I bought mine they didn’t include them and I had to shorten them myself. I read a very recent post on the PSA Rock Forum which said they were now including a set of shorter screws. If you don’t receive the shorter screws, to shorten the supplied 12mm M4 screws yourself, you can buy an M4 screw cutter on Amazon for $22 or can screw the screws into one of the 2 supplied red dot adapter plates supplied with the Rock. Secure the plate in a vice and carefully file down the threaded portion of the screw until the screw from the flat top to the bottom of the threads is 10mm in length. When you unscrew it from the plate it will repair any damage to the threads you may have caused during the shortening.
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Posted: 3/17/2024 11:22:46 PM EDT
[#25]
hey @palmettostatearmory Josiah, i noticed this thread almost at the bottom of page 1, do you think we can sticky this topic?
thanks |
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Posted: 3/18/2024 1:12:42 PM EDT
[#26]
Quote HistoryOriginally Posted By RDTCU: Related from SHOT '24 PSA X57 https://www.ar15.com/media/mediaFiles/173511/1000003031_jpg-3104635.JPG Can we get an 8" barrel version also? Makes a great truck gun in areas with coyotes, fox, and bobcats. |
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Posted: 3/25/2024 11:09:30 PM EDT
[#27]
Anyone have a rock5.7 mag they can spare to sell for someone behind enemy lines?
PM me |
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Posted: 3/26/2024 2:32:48 PM EDT
[#28]
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Posted: 4/16/2024 9:13:10 PM EDT
[#29]
Quote HistoryOriginally Posted By GamecockOperator: hey @palmettostatearmory Josiah, i noticed this thread almost at the bottom of page 1, do you think we can sticky this topic? thanks quoted in case you missed it. @palmettostatearmory |
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Posted: 4/16/2024 9:41:14 PM EDT
[#30]
From digital nimbus labs, the Granite 57
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