The AR-15 design retained the 20" barrel of its AR-10 parent. The U.S. Army would start testing the AR-15 by late 1958, ... The Brownells and FN each feature chrome-lined bores.

Barrels are hammer forged, chrome lined and have a 1:10" rate of twist. The SR-25 CC M-LOK (Combat Carbine) and SR-25 PC M-LOK (Precision Carbine) have 16" barrels, come with two-stage triggers ...

As with the Mod 0 and Mod 2, the Recce 14 is a 5.56mm caliber rifle with a chrome lined barrel and 11595E certified steel. It’s got a Mod 4 charging handle, a Mod 3 pistol grip and a BCM QD end ...

Since its inception, this model has been in so much demand that Arsenal, Inc. turned it into a standard product rifle. The SAM7SFK – milled receiver Short Barrel Rifle with Arsenal’s right ...

It’s got a sixteen-inch, 4140 steel, chrome-lined, government-profile manganese-phosphate-coated barrel that features a 1/7” twist, Stag 15 M-LOK SL Handguard, MOE Pistol Grip, CTR Stock, 30rd ...