I have a colt m4 16” upper, it has the C stamp and keyhole.
Barrel is also stamped C MP
Curious what this means, are they more desired? I bought it new a few years ago and it hasn’t seen much action in the last few years.
Barrel is also stamped C MP
Curious what this means, are they more desired? I bought it new a few years ago and it hasn’t seen much action in the last few years.