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Discussion in 'Black Rifle Forum' started by ghostman1960, Jan 16, 2010.
16, 18, or 20 inches? Thanks.
16". Carbine length, different gas system.
There are also 18" (or will be soon, from BCM).
Mid-length refers to the gas system length, not the barrel length.
The carbine-length gas tube is about 7.5 inches, the mid-length gas tube is about 9.5 inches long, and the rifle length gas tube is about 11.5-12 inches long.
Barrel length can differ.
There is supposedly a 14.5" midlength in the works from BCM. Couple that with a lightweight barrel, and it just might be something I'll have to add to the list.