The Barrett M107A1 .50 BMG semi-auto rifle with a 29-inch fluted barrel and Flat Dark Earth Cerakote (Barrett part no. 18065) is the lighter, stronger evolution of the recoil-operated big-bore rifle that made the company’s name. Barrett rebuilt it with current materials and manufacturing, and the maker credits the redesign with a 4-pound weight reduction over its predecessors. A 10-round steel magazine feeds the action, and a 23-inch top rail leaves plenty of room for a long-range scope and mounts. It suits extreme-range shooters who want a genuine .50 BMG that is easier to carry and run than the older designs.

Key Specifications

• The chambering is .50 BMG, the big-bore cartridge this rifle was engineered around for extreme-range work.
• Operation is recoil-operated semi-automatic, so follow-up shots do not depend on cycling a bolt by hand.
• Barrel length is 29 inches (737 mm) with a fluted profile, the longer of the two barrel configurations Barrett builds on the M107A1.
• The chamber and bore are fully chrome-lined, a lining that protects the barrel against corrosion and wear.
• Twist rate is 1:15 inches (381 mm), the rate Barrett specifies to stabilize the heavy bullets this cartridge fires.
• Capacity is 10 rounds in a steel magazine, and cartridge witness indicators show what is loaded.
• Overall length is 57 inches (1,448 mm) with the 29-inch barrel installed.
• Weight is 28.7 pounds (13 kg) in the 29-inch configuration, reflecting Barrett’s goal of making every component lighter and stronger.
• The top rail is 23 inches long with 27 MOA of built-in elevation, which gives long-range optics extra adjustment to work with.
• The rifle wears a Flat Dark Earth Cerakote finish, part of the anti-corrosive coatings Barrett applies across the M107A1.

Frequently Asked Questions

How many rounds does this Barrett M107A1 hold? It takes a 10-round steel magazine with cartridge witness indicators, chambered in .50 BMG.

What barrel length and weight does this M107A1 have? This version has the 29-inch fluted barrel, a 57-inch overall length and a weight of 28.7 pounds. Barrett also builds a shorter 20.6-inch configuration, which is a different rifle.

What scope rail comes on the rifle? The rifle carries a 23-inch rail with 27 MOA of built-in elevation, a long platform for mounting a precision optic.

Buy the Barrett M107A1 .50 BMG Semi-Auto Rifle, 29-Inch Fluted Barrel, FDE Cerakote, 10-Round

A .50 BMG is a long-term purchase, and the M107A1 gives you a current-generation design with a long barrel, a full-length optic rail and a finish chosen for hard use. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL, and see more semi-auto rifles while you are here.