
Originally Posted by
mp43
Hold on man, don't put a regular carbine length H2 or H3 buffer in an A5 receiver extension!!!! Bad things will happen.
Earlier in this or another post I used terminology that may have misled you; in a trial I conducted with home made reduced mass A5 buffers I called the regular weight A5 buffer an H2 because like the carbine gas system H2 it also has two heavy tungsten buffers. I referred to the light ones I fashioned as H1 and H0. A factory Vltor H3 and H4 have three and four heavy tungsten weights respectively.
A carbine length HX buffer in an A5 extension may result in the BCG jamming into the extension, possibly breaking it or hurting you!
If you feel that your 16 inch carbine length barrel is over-gassed, the A5 system may be for you. Purchase the bare A5 tube, a standard rifle length spring, and a Vltor H4 buffer. Then swap out two of the tungsten weights for stainless ones from a carbine buffer. If you still feel the carrier is moving too fast then male an H3 or an H4 by replacing the tungsten weights back in.
It is very likely that all you will need is an A5 with two tungsten weights, maybe three. In the interest of weak ammo compatibilty you should stick with the lightest weight buffer that will cycle your weakest ammo and hold the bolt back all the time. This is critical if you use the cheaper 223 loads out there.
Do not put a short carbine length buffer in an A5 receiver extension!!!
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