AR Sponsor
Posted: 5/21/2012 9:39:24 PM EDT
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Geeze.. times have changed. I have built numerous ARs back in the day.. like 20 years ago.... but new technology and products amaze me now that I am building another one.
My questions is about buffers. I am building a 14.5 middy, and searching for the right buffer to start with confuses me when I do searches for answers. I presume that I can start with whatever the parts come with (H buffer) and if it short strokes with light ammo, I need to use a lighter buffer or use a semi bolt carrier? If it does not, I can try a heavier buffer to have less recoil? I see people using an H, then go to a H2 for more reliability, but not sure if they mean so it won't short stroke, or just smoother. From what I see, H is the lightest, then 2 and 3. Am I on the right track here???? |
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You've got it.
I bought an H2 buffer for my 16" carbine. It worked perfectly and noticeably reduced the recoil (I also put in an M16 BCG). Then I shot PMC bronze. Turned out, the weight was slightly too much for the lighter powered ammo. It would cycle fine when firing, but 50% of the time the blot carrier would not lock back after the last round in the magazine. I didn't want to swap back to the semi BCG, so reasoning that the weight change only needed to be slight, I cracked open my H2 Buffer and the standard one the rifle came with. I switched one of the tungsten weights in the H2 for a steel one from the standard. Threw it back in the receiver extension and tested it. Voila! Now my carbine works like a swiss watch. I personally don't think you will need an H2 buffer with a mid-length gas system, it may even hinder you, like you thought, with low pressure ammo. An H buffer will suit you fine. |
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if you get a receiver extension kit it will come with a standard carb buffer.
try it out if it's cycling to fast or you want to reduce some felt recoil get an h3 the h3 has 3 tungsten weights the carb has steel weights between the two you can disassemble and make all the others in between. the h number is the number of tungsten weights h has 1 tung 2 steel, h3 all tung |
put a heavier buffer does solve the problem of being over gassed or vise versa but it doesn't solve the real problem at hand your rifle is under or over gasses IF and only if your having problems go to a gunsmith and have them set your GB to the correct setting and you won't need that SA carrier or that H2 buffer and most likely it will be cheaper
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