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3/26/2026 2:08:57 PM EDT
[#1]
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Originally Posted By Shlouf:


Everyone is waiting for someone else to try it first
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Originally Posted By Shlouf:
Originally Posted By Plumber576:
Originally Posted By spyderboy03:
Originally Posted By Shlouf:
Anyone tried or heard reports of the barrel working fine with the mod0 gas block?
@Shlouf I don't know the dimensions of the "band" on it, but I posted some gas channel dimensions on page 2: https://www.ar15.com/forums/industry/18-SPR-Barrel-More-Coming-Soon-/444-306598/?page=2#i4348405


I was asking earlier in this thread about the PRI flip-up sight, still don't have an answer.


Everyone is waiting for someone else to try it first
If the collar is .34" wide, there is a chance of it working. If it isn't that wide, it won't fully cover the phased array channel.
3/31/2026 9:37:17 PM EDT
[Last Edit: RV8guy][Edited] [#2]
Got the barrel in today. It’s very nice. I can’t wait to get this guy installed.

Edit - The SPR seasoning was a nice touch.
Carpe diem - Seize the day
Carpe per diem - Seize the expense check
3/31/2026 9:40:45 PM EDT
[#3]
Attached File

Yeah I was quite surprised when the ups guy came down my road Friday.
No way an Allen can is going on this! I don’t know why I thought it’d tuck in the rail.
But my mash bill is pretty much complete. Just need to put it all together.
4/1/2026 7:48:56 PM EDT
[#4]
Quote History
Originally Posted By spyderboy03:
@neight OOS now. They were in stock for about 10-15 minutes on Tuesday.

https://geissele.com/featured.html
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The best page on the site is gone. Dammit.
Esstac’s Retarded Social Media Influencer
4/2/2026 12:22:14 PM EDT
[#5]
Quote History
Originally Posted By NachoDip:

The best page on the site is gone. Dammit.
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The ODG upper/rail kits are still available just not under featured anymore.
4/9/2026 9:18:55 AM EDT
[Last Edit: DVCNick][Edited] [#6]
Got the upper put together yesterday, pretty much drama free.
Hopefully mounting the scope today and getting first rounds through it this weekend.

Edit... went back and found recommended break in procedure on page 2
4/30/2026 10:21:59 AM EDT
[#7]
FYI, check your barrel/package when you get it thoroughly even if you don't plan on building it out for a while. Mine was missing the gas block screws. I was hoping to get it to the range this weekend, alas that cannot happen without those. I filed a warranty claim Tuesday a little before 6pm Eastern (when I got home and opened the box), and they just got back to me with a shipment of the screws getting into the wind today.

They're taking care of me, but it's a little frustrating - don't be the guy who sits on the box for months while you collect parts, then discover 6 months later that it's missing like the gas tube or gas block screws
"Oh, bother," said Pooh, as he pulled the pin on another grenade...
4/30/2026 10:57:31 AM EDT
[#8]
Quote History
Originally Posted By Evil_Ed:
FYI, check your barrel/package when you get it thoroughly even if you don't plan on building it out for a while. Mine was missing the gas block screws. I was hoping to get it to the range this weekend, alas that cannot happen without those. I filed a warranty claim Tuesday a little before 6pm Eastern (when I got home and opened the box), and they just got back to me with a shipment of the screws getting into the wind today.

They're taking care of me, but it's a little frustrating - don't be the guy who sits on the box for months while you collect parts, then discover 6 months later that it's missing like the gas tube or gas block screws
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Run to an Ace and get a couple so you can test while waiting for the G screws to arrive.
4/30/2026 11:17:45 AM EDT
[#9]
Quote History
Originally Posted By spyderboy03:
Run to an Ace and get a couple so you can test while waiting for the G screws to arrive.
View Quote


Or McMaster Carr.
Seems like I make payment put the phone down and the little delivery van is in the driveway.
4/30/2026 5:51:36 PM EDT
[#10]
Good advice right here, my barrel arrived last Friday also missing the gas block set screws.
5/2/2026 4:45:36 PM EDT
[#11]
Got to say, mine is shooting lights out so far, especially with AA2520... +/- 1" 10rd groups.
Still getting loads dialed in.
5/8/2026 11:42:12 AM EDT
[#12]
Quote History
Originally Posted By neight:


It’s the pioneers that get the arrows.
The settlers get the farms.
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Couldn’t help myself.

Covers the gas channels, so we will see if the clamping seals it enough. AAR this evening

Attached File

5/8/2026 11:45:03 AM EDT
[#13]
Quote History
Originally Posted By Shlouf:


Couldn’t help myself.

Covers the gas channels, so we will see if the clamping seals it enough. AAR this evening
View Quote


I will wait with breath that’s baited.
5/8/2026 1:08:08 PM EDT
[#14]
Quote History
Originally Posted By neight:


I will wait with breath that’s baited.
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Originally Posted By neight:
Originally Posted By Shlouf:


Couldn’t help myself.

Covers the gas channels, so we will see if the clamping seals it enough. AAR this evening


I will wait with breath that’s baited.

This excites me, thanks for trying this!
5/8/2026 4:43:05 PM EDT
[#15]
All things are pointing to success.

Raining, so only fired a few shots in the dirt in the backyard. After 8 rounds, no signs of leakage on the top 3/4 of the circumference. Little bit showing at the bottom at the clamping gap.

Hopefully get out to the range tomorrow and put some more rounds through it.
5/9/2026 5:30:58 PM EDT
[#16]
@GACS did these barrels ever make it out to dealers? I found an outfit that claims to have a handful in-stock but I have a doubt as even some of your most well known dealers have never even listed it on their sites.
5/9/2026 8:29:07 PM EDT
[#17]
Quote History
Originally Posted By awayteamriker:
@GACS did these barrels ever make it out to dealers? I found an outfit that claims to have a handful in-stock but I have a doubt as even some of your most well known dealers have never even listed it on their sites.
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I saw that simple man armory had some the other day. I've ordered from them for non G stuff. I've never seen them on any other site besides tacswap and the EE. Not sure how they got the barrels other than ordering several to put on their site.
5/11/2026 10:22:36 AM EDT
[#18]
Quote History
Originally Posted By Shlouf:
All things are pointing to success.

Raining, so only fired a few shots in the dirt in the backyard. After 8 rounds, no signs of leakage on the top 3/4 of the circumference. Little bit showing at the bottom at the clamping gap.

Hopefully get out to the range tomorrow and put some more rounds through it.
View Quote


No issues at the range. Had a nice 3 o’clock ejection and the same minimal gas leakage around the clamp screw gap on the bottom.

Attached File
5/11/2026 12:24:22 PM EDT
[#19]
Quote History
Originally Posted By Shlouf:


No issues at the range. Had a nice 3 o’clock ejection and the same minimal gas leakage around the clamp screw gap on the bottom.

https://www.ar15.com/media/mediaFiles/223848/IMG_8500_jpeg-3760704.JPG
View Quote

Thanks for the update, I think I'll be moving forward with a Geissele SPR barrel on the next batch.
5/23/2026 1:05:36 PM EDT
[#20]
Attached File


Built out my ‘extra’ spr barrel…got an AEM5-30k coming for it….

And now I need another scope…
Some will die in hot pursuit in fiery auto crashes.
Some will die in hot pursuit while sifting through my ashes.
Some will fall in love with life and drink it from a fountain, that's pouring like an avalanche coming down the mountain.

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