I have had to "cure" three M16s of bolt bounce. Factory setups are fine and run right, but when whoever gets ahold of a transferable MG and decides he needs a 7" barrel, to mess with internals, or add a piston setup I have seen hammer follow like crazy on the bolt's rebound (which usually results in about three rounds of full auto, then a chambered round with the hammer tripped).
Veteran gunsmiths I talked to said "Colt spent millions of dollars figuring out how much a buffer should weigh, and Jim Bob didn't". Thus, the solution was essentially to buy a case or two of ammo, 6 or 7 buffers, and find out which one worked best with the combo.
I am having the problem you speak of with a piston upper on my select fire carbine rifle. Could you please explain to me the solution? I have tried a new buffer spring and H2 and H3 buffers. I can't get it to run properly.
Bolt Carrier Bounce: Causes and Solutions
in Infantry Tools & Tactics
Posted
I am having the problem you speak of with a piston upper on my select fire carbine rifle. Could you please explain to me the solution? I have tried a new buffer spring and H2 and H3 buffers. I can't get it to run properly.