HK416D GEL BLASTER UPGRADES NO FURTHER A MYSTERY

I even blended up a buncha old, new, and subsonic in a number of mags and it fired all of them flawlessly. immediately after spring swap, would get gentle strikes just about every twenty-forty rounds. When that transpires, You must eject the magazine 1st due to the fact there is no way to hold the bolt open. insert to estimate Only exhibit this us