Carbine to Rifle buffer swap

[Czgunner]

I've been shooting my PWS MK216 for a while and getting it figured out.

I want to go away from the carbine stock. Its prevents a good cheek weld and rips my beard hair out.

I'd like to go to a fixed stock. The rifle came with PWS's receiver extension and buffer with spring. I emailed and asked them about changing to a different setup and they told me to try a different stock that fits on the carbine extension. I have found a few, but they are expensive and some like the PRS is very long and heavy.

Currently the rifle is gassed just right, in fact I have to run the gas setting on full to operate with my silencer. The gas valve has 4 positions: normal, low back pressure suppressed, suppressed and off. So, I can't have anything that is heavier or that will slow down the carrier speed any more.

The PWS buffer is marked H2 and weighs 4.2 oz on my scale. The stock is a BCM gunfighter. Looks like a standard carbine spring. The receiver extension is PWS's enhanced carbine tube.

Any suggestions?

Edited November 16, 2019 by Czgunner

[shooterrex]

https://www.magpul.com/products/moe-fixed-carbine-stock-mil-spec

[Czgunner]

33 minutes ago, shooterrex said:

https://www.magpul.com/products/moe-fixed-carbine-stock-mil-spec

I saw those, but the length of pull is a little short for me. Thanks for the recommendation though.

[98Z5V]

 

1 hour ago, Czgunner said:

I saw those, but the length of pull is a little short for me. Thanks for the recommendation though.

 

You can add 7/8" to that LOP on that stock, just by putting on the PRS Extended buttpad.  It fits.

https://www.brownells.com/shooting-accessories/recoil-parts/recoil-pads/rifle/prs-extended-rubber-butt-pad-sku100010588-54028-105445.aspx?utm_medium=cse&utm_source=connexity&utm_campaign=itwine&utm_content=Social

[Czgunner]

I got the fixed carbine stock and extended butt pad on today. LOP is still a bit too short.

I think I want to just mount the MOE rifle stock. It feels like a good length. Just need to figure out with buffer and spring to use.

[shooterrex]

https://www.armalite.com/product/ar-10-rifle-length-receiver-extension-kit-no-stock-ar10rekit02/

Here ya go

[392heminut]

I have the MOE Fixed Carbine Stock and the extended buttpad on my Matrix build. It's a pretty good stock, but still too short for me (I'm 6'4").

I'm going to try one of these;

https://www.midwayusa.com/product/1021317628?pid=962091

[Czgunner]

I'm going to just swap to a rifle extension. I'll send this setup back and use the Magpul MOE rifle stock I have sitting here.

KAK sells weights individually, so I'm going to order a selection to be able to tune this thing.

Brownells has their 308 buffer on sale right now too.

If I have issues, I'll just install the PWS buffer and spring. I have a spacer for this to work. Just thinking the rifle setup would smooth things out more.

Edited December 9, 2019 by Czgunner

[98Z5V]

38 minutes ago, Czgunner said:

Just thinking the rifle setup would smooth things out more.

It does, when the buffer weight is right, the spring is right - it's a longer travel over a carbine extension, and it's a smoother system.  Buffer weight has to be right, and the spring has to be right, though. 

[bubbas4570]

I prefer rifle length buffer/tubes/buttstocks over any of the carbine versions.  They just fit me better, 6'2" with ape arms. 

 

I lucked out on my builds, as the 308AR was converted by APF for me, and it ran great....it already had a rifle length gas system on a 16" barrel.

I did the same thing with my FUR....223 with 16" true dissipator barrel and standard rifle buffer system for build.

My Bella, well that was truly stepping into a pile and walking out clean.....was gifted a .223 Bushmaster 16" carbine upper, and put it onto a standard rifle length buffer lower....runs impeccably. 

 

And they all had smoother felt recoil impulses than either my wife's carbine or my sons mid length .223's.

[Czgunner]

I haven't had a chance to shoot it yet, but I installed a Colt forged receiver extension, Strike Industries flat wire spring and Brownell's rifle buffer. I think it feels nicer and it doesn't grab my beard. Hoping to get to the range in the next week or two.

[Czgunner]

Okay, finally made it to the range today. Shot Magtech “sniper” 168gr and Saltech ball.

It shoots so much nicer now! Suppressed I was able to turn the gas down to the middle position.

[Armed Eye Doc]