I have an extensive collection of semi auto rifles, An m1 Garand, m1 carbine, AK47, M14, AR15A2, an M4 mws, A4, semi auto xm177e2 replica, and a real Mk14 mod zero EBR. I want to use cap firing guns to fill the gaps in my collection where semi auto rifles would be redundant or illegal with short barrels.
Here are my legal questions,
1. can a cap firing m16 be modified to fire m200 blanks? Legally and from a safety perspective. I don't know how much pressure caps exert.
2. does any one know the legal distinction between a cap or blank gun and a real firearm? I want to make a blank firing mk18 cqb rifle. I want to know how much i need to modify the barrel to so that i don't have an unregistered short barreled rifle on hand. a full auto one would be nice too, but I'm not sure if a cap gun with a real upper receiver and modified barrel would be legal.
I also have technical questions
Does any one know what level of parts comparability exists between the Marushin m16's and real ar15s? I want to buy one and replace the pins and hand guards with real ones, as well as magazines, and possibly upper receiver.
what is the threading of the muzzle of marushin m16?