Loading... Please wait...

Like Us on Facebook!


Add to Wish List

Click the button below to add the GM-M39 16" 6.8 SPC II M4 Barrel to your wish list.

You Recently Viewed...

GM-M39 16" 6.8 SPC II M4 Barrel


Product Description

6.8 SPC II, 1.11 twist,  16" long, 41V50 steel, weighs 1.85 lbs.,  M4 Replacement Barrel, fully machined with extension (with m4 feed ramps), button rifled,stress relieved, air gauged. Chrome line bore and chamber, carbine length gas block, .750" gas block, .073" drilled gas port, muzzle threaded 5/8-24, Phosphate finish.

Barrel is not pinned for front sight.

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

Write your own product review

Product Reviews

Showing reviews 1-5 of 9 | Next

  1. great barrel 5 Star Review

    Posted by on 22nd Oct 2020

    Awesome barrel ,have bought others and they are the best for the money !!!

  2. 6.8 SPC barrel 4 Star Review

    Posted by on 16th Jan 2020

    Real nice barrel for the price and chrome lined to boot. Have only sent about 100rds down range and seems to group well @ 100yds with red dot and back up irons. See how it dose when weather breaks with a magnified optic. But wish it had a pinned barrel for a milspec frt. sight post but no big deal. I like it.

  3. Great Barrel 5 Star Review

    Posted by on 30th Aug 2017

    When I received my barrel it was well packaged and fit and finish is great. I mounted to a matched Spike's upper and lower. With the right ammo it shoots sub MOA at 100 m. Great barrel!!

  4. very impressed! 5 Star Review

    Posted by on 25th Aug 2017

    I received my barrel, assembled my gun put a vortex viper on it, shot and hit an 1/8 inch to left of my intended target. Then proceeded to put two more shots through the first shot. Very impressed!

  5. Niiiiice 4 Star Review

    Posted by on 20th Sep 2016

    Nice product. We had to open the gas port hole a tad to allow more gas for our stouter spring but worked like a charm.

Showing reviews 1-5 of 9 | Next