i probably should have mentioned that im talking about a M1A/M14
i know why the standard BFA are huge and brightly colored.
the m1a's that our honor guard use are strictly blank fire only... but id still like to keep them functional if need be
the BFAs for the m16 completely block the barrel... so i dont know what you mean by its "has holes"
the plunger completely blocks the barrel by being screwed down into the barrel
im now thinking i could just design a solid "flash suppressor" that would completely block the barrel, just gotta figure out a way to keep the weapon from loading real ammo