- Location
- Calgary, Alberta
The additional recoil and stress put to the gun with a 16" carbine isn't worth it,
There's been an issue with this in M4s that have the snot shot out of them, we're talking semi-autos here, same issue doesn't apply.
I've had both, SP1 16", got a Colt 6721 right now, had a couple of 14.5" barrels in the past, one was a Wilson Arms barrel.
I don't work for SOCOM, I don't care what they use, 16" barrel works fine.
Although I'm now going to contradict myself totally and say I use my AR-15 with the 18" barrel more than anything else but that's just because it's a really nice barrel, the length isn't really an issue for me.