Colt SP1 Vs Colt AR15-A2

By Bob Owens | 9:19 PM | May 28, 2015

We have a little shoot-off challenge here between the original Colt SP1 rifle with a 1:12 twist and a later Colt Sporter Target Model (aka A2) with a 1:7 twist. There’s a lot of discussion on the net as to which rifling twist is the best for accuracy using 55gr ammo. Both rifles are fired with iron sights and the results are entertaining.

Bob Owens is the Editor of BearingArms.com. Bob is a graduate of roughly 400 hours of professional firearms training classes, including square range and force-on force work with handguns and carbines. He is a past volunteer instructor with Project Appleseed. He most recently received his Vehicle Close Quarters Combat Instructor certification from Centrifuge Training, and is the author of the short e-book, So You Want to Own a Gun. He can be found on Twitter at bob_owens.