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Old 01-05-2017, 08:53 PM   #426 (permalink)
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So, what are you guys running for a buffer and buffer spring?

I have a PSA glock lower and it says you can use a regular AR15 buffer and spring, but reading a lot of conflicting reports on the internet.

I have a extra PSA buffer and CMMG spring, but want it to run right and will buy whatever's going to work best (within reason ).

Also, anyone stacking quarters or running a spacer to prevent over travel?
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Old 01-05-2017, 09:51 PM   #427 (permalink)
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I bought the 9mm buffer with the kak pistol tube and blade. No need for spacers, it's the right weight and length.
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Old 01-05-2017, 10:25 PM   #428 (permalink)
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I bought the 9mm buffer with the kak pistol tube and blade. No need for spacers, it's the right weight and length.
Cool. I too am using the kak tube and shockwave. I saw the kak buffer, and its affordable to boot. Are you using a regular buffer spring?
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Old 01-06-2017, 06:33 AM   #429 (permalink)
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Quote:
Originally Posted by eyehatetofu View Post
So, what are you guys running for a buffer and buffer spring?

I have a PSA glock lower and it says you can use a regular AR15 buffer and spring, but reading a lot of conflicting reports on the internet.

I have a extra PSA buffer and CMMG spring, but want it to run right and will buy whatever's going to work best (within reason ).

Also, anyone stacking quarters or running a spacer to prevent over travel?
I'm using the NFA spacer and no problems.
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Old 01-06-2017, 01:23 PM   #430 (permalink)
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Quote:
Originally Posted by eyehatetofu View Post
So, what are you guys running for a buffer and buffer spring?

I have a PSA glock lower and it says you can use a regular AR15 buffer and spring, but reading a lot of conflicting reports on the internet.

I have a extra PSA buffer and CMMG spring, but want it to run right and will buy whatever's going to work best (within reason ).

Also, anyone stacking quarters or running a spacer to prevent over travel?
H or HB buffer.. a NFa spacer bumper thing and then I limited overtravel with 200 shilling Ugandan coins
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Old 01-06-2017, 03:36 PM   #431 (permalink)
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Quote:
Originally Posted by Gozuki View Post
I bought the 9mm buffer with the kak pistol tube and blade. No need for spacers, it's the right weight and length.
Quote:
Originally Posted by eyehatetofu View Post
Cool. I too am using the kak tube and shockwave. I saw the kak buffer, and its affordable to boot. Are you using a regular buffer spring?
I got the kit from Schuyler Arms, all matched for 9mm. And it was ridiculously cheap too. I wanna say like $55 shipped with the blade.
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Old 01-15-2017, 10:29 AM   #432 (permalink)
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This seems like a good solution for those having buffer issues.

https://www.kakindustry.com/ar15-con...-buffer-system

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Old 01-19-2017, 09:50 AM   #433 (permalink)
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I ended up buying a Slash 9Q-T buffer for my Quarter Circle 10 Glock 9mm. Was not getting consistent bolt hold open on last round like I was with the shorter KAK 9mm non-adjustable buffer. Was pulling my hair out trying to get it figured out by lightening it up and just happened to notice there was only about 1/8" between the bolt and bolt catch when manually locking the bolt back. Ended up having to mill 1/8" off the end of the buffer bumper to give the bolt catch time to lift. This gun will be a dedicated suppressed gun if I ever get my form 4 back...

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Old 02-24-2017, 12:12 PM   #434 (permalink)
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A couple of Builds I've been working on. I started out with the idea of building a side-charging upper and just decided to go with a slick-side.

First up pistol to later be SBR'd
mil-spec lower
rock river magwell block
Kaw Valley Precision 4.5" barrel
Spinta slick-side upper
KVP 5" guard
KVP comp
KVP bolt/buffer
POF 3.5# flat trigger
Blade stabilizer






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Old 02-24-2017, 12:17 PM   #435 (permalink)
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Next up competition carbine:

CMMG dedicated 9mm lower
Spinta slick-side upper
Taccom3G carbon handgurd
Velocity 3.5# trigger
KVP 16" barrel
JP bolt
JP Silent Capture Spring
Not pictured, but on the bench: C-More 6MOA dot.


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Old 03-01-2017, 01:02 PM   #436 (permalink)
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Two e-form 1's, both submitted 5/12/16, approved today.
Finally went out and shot mine yesterday. NFA lower, LRBHO/side charger upper, wilson arms 7.5" barrel, pistol buffer. Shot well. Took a bit to get broken in, probably 100 rounds or so before is started to function 100%. Bolt was sticking prior to that point; LRBHO worked great as well. Had to download the 33 rounds to 30/31 rounds to have the bolt pick up a round and slam home. Standard glock mags worked perfectly though.
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Old 03-01-2017, 01:10 PM   #437 (permalink)
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i want a 9mm upper for my SBR lower. what mag block should i be getting? i hear some are terrible while others are awesome and cost 3x as much.
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Old 03-01-2017, 01:59 PM   #438 (permalink)
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How quiet are you guys getting these? My friend and I both have one, and both of us are disappointed on how loud they are while suppressed. The pistols using the same ammo and suppressor are quieter than both of our rifles.

It's not uncomfortable to shoot, but there is enough sound to echo off the trees. Something that doesn't happen with the pistol.
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Old 03-01-2017, 02:28 PM   #439 (permalink)
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How quiet are you guys getting these? My friend and I both have one, and both of us are disappointed on how loud they are while suppressed. The pistols using the same ammo and suppressor are quieter than both of our rifles.

It's not uncomfortable to shoot, but there is enough sound to echo off the trees. Something that doesn't happen with the pistol.
What ammo and barrel lengths are you using?
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Old 03-01-2017, 03:22 PM   #440 (permalink)
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What ammo and barrel lengths are you using?
147gr subs

mine is a 3.5" barrel Not sure what my friends is, roughly the same.

I believe the suppressor we tried was his 45cal octane. Its the only one we had that would work on a pistol and rifle for comparison.
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Old 03-01-2017, 04:04 PM   #441 (permalink)
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147gr subs

mine is a 3.5" barrel Not sure what my friends is, roughly the same.

I believe the suppressor we tried was his 45cal octane. Its the only one we had that would work on a pistol and rifle for comparison.
Running a heavy buffer? Maybe you're getting some sound from the chamber itself because it's blowing back too soon?
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Old 03-01-2017, 04:32 PM   #442 (permalink)
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i want a 9mm upper for my SBR lower. what mag block should i be getting? i hear some are terrible while others are awesome and cost 3x as much.
The Hahn bottom loading adapter has worked the best for me in a bunch of builds.
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Old 03-01-2017, 10:02 PM   #443 (permalink)
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Running a heavy buffer? Maybe you're getting some sound from the chamber itself because it's blowing back too soon?
This... You will need to run the heaviest buffer you can to delay the bolt in order to really quiet it down.
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Old 03-02-2017, 05:39 AM   #444 (permalink)
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Originally Posted by jeepman1320 View Post
This... You will need to run the heaviest buffer you can to delay the bolt in order to really quiet it down.
What weights are you guys running for suppressed? I have a KVP 7 ounce or so that I tried last night on a 4.5" barrel and it was surprisingly loud. I have a HeavyBuffers one that is heavier, I think 8.5... I might give that a try. The only other one I'm seeing is the Heavy Buffers 9QT at 12 ounces.

I also have a JP Silent Capture spring setup, any feedback on that vs heavy buffer setup?
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Old 03-02-2017, 07:54 AM   #445 (permalink)
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The Hahn bottom loading adapter has worked the best for me in a bunch of builds.
says its for colt and RRA uppers. whats the difference in, say, a CMMG upper?
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Old 03-02-2017, 09:08 AM   #446 (permalink)
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says its for colt and RRA uppers. whats the difference in, say, a CMMG upper?
Nothing. I run the CMMG bolt with the hahn adapter in Aero Precision uppers and never a problem.
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Old 03-02-2017, 09:29 AM   #447 (permalink)
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Running a heavy buffer? Maybe you're getting some sound from the chamber itself because it's blowing back too soon?
I read that might be an issue. Sounded like snake oil to me. I guess I can give it a try.
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Old 03-02-2017, 11:17 AM   #448 (permalink)
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Well shit! I've lurked long enough to get bit
Now I've got to build one. Mine would be in 9mm/Glock.

On another note, a buddy just got a Mech Tech in .40 and it is very cool!
Run what ya brung for a lower and BAM, you've got a PCC!
Now I may have to rethink an AR-style set up
I still haven't decided what parts-n-pieces based on umpteen pages of 'this is what I did...' for an AR build
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Old 03-02-2017, 01:46 PM   #449 (permalink)
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I finally built a pistol, NFA glock lower, spinta bolt, kak 8" barrel and slim flash can, shockwave brace, carbine buffer and spring with NFA spacer. Need to test it, put on a angled grip depending on how the wife wants it.
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Old 03-02-2017, 02:07 PM   #450 (permalink)
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My shockwave brace didn't hold up to the recoil with just the set screw. I actually wound up using a PVC coupler as a spacer between the brace and the receiver so it couldn't slide forward, but to give me a few extra inches of length.
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