AR buffer

[eighteenninetytwo]

haev heard many references to these. I assume that the buffer is used to lessen theimpact on materials and components of the recoil I have just purchased the lower for my first carbine build. would I be right in thinking that a carbine would need a buffer more than a standard 20" rifle. Also - and thisis nebie quetsion, where doe sthe buffer go on the AR, is it in the receiver or does it attach to the spring.

[aplinker]

The buffer adds mass and is what "bottoms out" during recoil within the tube.

All ARs need them, no difference in need for a carbine or rifle.

The AR buffer goes in the receiver extension (inside the buttstock) AKA - the buffer tube.

Here's a carbine stock kit:


And rifle:

[Army]

Not ALL AR's need them. There are piston driven rifles that utilize only a mainspring around the op-rod. This also allows a folding stock.

The buffer has heavy metal cylinders inside. During firing, they seperate while banging into each other, diffusing the rearward shock of the gas impulse against the bolt and carrier. This results in a smooth, even rearward thrust of the bolt carrier group, less impact at the end of the buffer tube (buttstock), and much less stress on the recoil spring.

Aftermarket buffers have been made of much heavier materials, hydraulic systems, pneumatic systems, and even mercury filled. All do the same thing; slow the rearward thrust of the BCG.

[aplinker]

ZM weapons is not a piston rifle. Neither is the OA-93/6/etc. They're simply DI rifles that move the spring above the barrel.

I'm not aware of any piston ARs that don't have a buffer tube. All of the common ones require it (LWRC, POF, PWS, etc.)

Not ALL AR's need them. There are piston driven rifles that utilize only a mainspring around the op-rod. This also allows a folding stock.

The buffer has heavy metal cylinders inside. During firing, they seperate while banging into each other, diffusing the rearward shock of the gas impulse against the bolt and carrier. This results in a smooth, even rearward thrust of the bolt carrier group, less impact at the end of the buffer tube (buttstock), and much less stress on the recoil spring.

Aftermarket buffers have been made of much heavier materials, hydraulic systems, pneumatic systems, and even mercury filled. All do the same thing; slow the rearward thrust of the BCG.