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AR15.COM
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5/20/2015 7:55:42 PM EDT
Hello everyone,

I have a 14.7in / m4a1 profile barrel carbine length gas system.

My understanding is that the H2 buffer is used in this configuration.

I have the H2 buffer and a Tubb CS flat wire spring in the carbine.

It seems to work great and the bolt locks back every time after feeding 1 round from a magazine with the weakest ammo I can find.

My question is: will an H3 buffer reduce recoil at all, or would it be worth checking into whether the bolt would lock back with one? What would the potential drawbacks be?

Does the military avoid the H3 in this configuration because of full auto rpm considerations?

My gas tube port hole isn't enlarged or anything so far as I am aware.

Also, is the "sproing" sound nominal when firing carbines? I am relatively new to them.

Thank you for your input.
5/20/2015 8:11:10 PM EDT
[#1]
Experiment away.
Worst case it may stop locking back with all ammo.
5/20/2015 8:49:27 PM EDT
[#2]
Quote History
Quoted:
Experiment away.
Worst case it may stop locking back with all ammo.
View Quote


This. I have several BCM 16" LW middy uppers that lock back fine on 55gr PMC Bronze using a Wolff std buffer spring & H3 buffer.
Tomac
AR Sponsor