This detailed report shows which M4 rifle design works the best

Nothing new for some of use. They could solve the whole deal by making them piston guns and they could be tuned to whatever gas pressure they want. Plus you can shoot a 1,000 rounds and not NEED to clean the weapon. One of the AK's most endearing features.

Great share. Very informative. With many folks building their own AR’s, this type of information is very useful. Thanks for sharing.

Good to know, stuff.