16" Carbine Barrel vs. 16" M4 Carbine Barrel
I'm looking at purchasing an AR-15 with a 20" heavy barrel from a family friend ($500 like new) and I want to get a 16" barrel for ease of use and storage in a patrol car. My question is: what is the difference between the 16" carbine barrel and the 16" M4 carbine barrel? If both are 1:9 and chrome lined, does the exterior contour really make a difference?
Thanks for the help.
Kimber Eclipse Pro II/Glock G23 RTF2/Savage 111 .30-06/Yildiz SP2-ME Special 12ga
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