Originally Posted by indyfan
Anyone have any experience creating a blank firing adapter for the AR-15? I'm the weapons guy on a movie set and I'm thinking of a modifying a flash suppressor to allow the AR to fire and cycle blanks. I'm pretty sure it will not be difficult.
I tried looking up some but the training blank adapters they sell look awful.
take the flash suppressor off. get a solid steel disc 1/8-1/4 inch thick more the better and .44 inch in diameter. put that under the flash hider as a cap to cover the muzzle then screw on the muzzle device. the bore has to be blocked totally for a AR15 to cycle blanks. its easily removable for converting back to live ammo. just DO NOT FIRE LIVE AMMO WITH IT IN PLACE!!!!
this is for .223/5.56 ONLY!!!!! other rounds require some opening to function such as .308 7.62x39 7.62x51 and so on. if you totally plug a larger caliber it will go kaboom. 5.56 is the only one you can plug 100% and function correctly without a kaboom. DO NOT use this method with a PISTON DRIVEN ar15. this is for direct impinged gastube rifles ONLY!!!
blanks can kill up to 10yards away. its kinda how bruce lee's kid died accident with blanks and live ammo
be sure to check frequently while operating and keep the firearm WELL lubed with 30 weight motor oil as blanks are extremely dirty and will clog any gun.
check the disc frequently before each use look for bulges or cracks if present replace. it should be checked every 150-200 shots.
remember dont shoot it directly at a person because if any blank device fails it becomes a bullet. even the big red training adapters fail