Fixed stock buffer on 16" carbine gas length

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zorro60
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Fixed stock buffer on 16" carbine gas length

Post by zorro60 » Sat Sep 07, 2019 6:36 pm

My 16" barreled with carbine length gas tube has had no feeding problems with the adjustable stock. I changed the stock to a fixed rifle stock with the longer buffer and spring that came with the stock. Granted it is for a 5.56 cal but can't find anything for 300 Blackout. It doesn't feed well at all. Thought about just putting the adjustable stock back on if there was nothing else I can do. If this has already come up could you point me to the thread? Any suggestions?
Thanks
John

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dellet
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Re: Fixed stock buffer on 16" carbine gas length

Post by dellet » Sun Sep 08, 2019 1:59 am

The rifle buffer is too heavy and the spring is to stiff for a carbine gassed barrel. Use a standard carbine buffer and spring with a spacer in the bottom of the buffer tube.
300 Blackout, not just for sub-sonics.

zorro60
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Re: Fixed stock buffer on 16" carbine gas length

Post by zorro60 » Sun Sep 08, 2019 11:37 am

Thank you, I will give it a try.
John

Wanderson
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Re: Fixed stock buffer on 16" carbine gas length

Post by Wanderson » Mon Sep 09, 2019 9:33 pm

You’re gonna have to either lighten the rifle buffer or go with a lighter spring, maybe both.
I’d start with a lighter Springco spring.
The rifle buffer is 5 oz., same weight as an H3 carbine buffer. Std. carbine buffer is 3oz.
But I’ve not seen a lighter rifle buffer.
Or a cheap solution would be to just get a spacer and use your original carbine buffer & spring. Brownells sells them, it’s made of a white delrin polymer.

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plant.one
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Re: Fixed stock buffer on 16" carbine gas length

Post by plant.one » Tue Sep 10, 2019 11:08 am

jp makes a lightweight (3oz) bbuffer for fixed stocks

https://www.brownells.com/rifle-parts/r ... 27116.aspx

hth
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dellet
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Re: Fixed stock buffer on 16" carbine gas length

Post by dellet » Tue Sep 10, 2019 2:24 pm

plant.one wrote:
Tue Sep 10, 2019 11:08 am
jp makes a lightweight (3oz) bbuffer for fixed stocks

https://www.brownells.com/rifle-parts/r ... 27116.aspx

hth
I wonder how well that works with a standard rifle spring, it's a nice alternative to the spacer and I would rather not use the extra piece if possible.
300 Blackout, not just for sub-sonics.

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plant.one
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Re: Fixed stock buffer on 16" carbine gas length

Post by plant.one » Wed Sep 11, 2019 12:39 am

no clue. none of my lowers have a fixed stock. :mrgreen:

but like you said - it solves the spacer issue, this is a proper form factor lightened up.

if i had to speculate i would guess its probably somewhat similar to a standard carbine spring with a h1 or h2 - but again thats WAG territory.
Reloading info shared is based on experiences w/ my guns. Be safe and work up your loads from published data. Web data may not be accurate/safe.
This disclaimer will self destruct in 10 seconds.

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