Green Mountain barrel.
GM made barrels for Colt. They only used a G when they did so.The only GM logo on my 18" Wylde barrels is a circle with a mountain range in it, like an upside down W.
But I never bought their NATO pattern barrels.
Might be a good buy then.GM made barrels for Colt. They only used a G when they did so.
They're as good as anything else in the midrange.