i own a kel-tec plr with all the extras you can get and one you can't get- a buffer tube with a custom mount on the tube, designed by myself , as some of you may know you can not alter the gun or you will break one or more laws about pistol- short barreled rifle. anyway i have had the great pistol for some time and have shot everything including steel crap ammo it will all shoot the steel does fail to eject some times but no real jam problems, only brass ammo for self defense apps. i own a few ar15"s in pistol config. THE KEL-TEC is still my favorite especially with the buffer tub and brace attached as this is a very lite 223 and totally reliable fun self defense close combat weapon even with eotec dot 5p mag flip out on top and combo laser flashlight bottom. ITS JUST GREAT -- OH --also 100 round drums run great through this platform. by one and see for yourself, if you can!