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GM-M50 10.3" long, 5.56 mm, 1:7 twist

Price:
$165.95
SKU:
GM-M50
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Product Description

5.56 mm, 1:7 twist, 10.3" long, 41V50 steel, weighs 1.2 lbs., AR15 barrel with button rifled, stress relieved, air gauged.

Features include a Carbine Length, .750” diameter gas system, a chrome line bore and chamber, phosphate finish, assembled extension with M4 feed ramps and ½-28 muzzle threads.

Under "See 2 more pictures" there is a detailed drawing of this barrel.

 Barrel is not pinned for a front sight base.


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Product Reviews

  1. Enjoying 10.3" of perfection! 5 Star Review

    Posted by on 4th Jun 2018

    I wasn't sure exactly how this shorty would perform but I was pleasantly surprised with it's performance. Was thinking it would be slightly over gassed and almost purchased an adjustable block just to be safe but I didn't and glad I didn't waste the $ because it is absolutely perfect running an M16 carrier and standard carbine spring and buffer. It cycles softer than all my other 16" carbine mid gas barrels I run including the GM-M8 sold here. I built a MK18 clone and think this barrel is absolutely perfect including the chrome lining which leads me to my second point.
    The accuracy out of this little barrel blew my mind being this is chrome lined and shorter to boot. I zeroed it in with 6 rounds at 50yrds and then checked the 50/200yrd zero which I figured would need some hold over because of the loss in velocity being nearly 5" short of the standard 16". So I centered the sight at a 1/3 ipsc steel hanger at 200yrds and hit dead centers shot after shot. Incredible!
    This is one of my favorite barrels I've used and will definitely build several more with this one being the heart of the build. Thanks again Green Mtn!