The Barrett M107A1 .50 BMG Semi-Auto Rifle (Barrett part no. 18068) is a recoil-operated big-bore platform built by Barrett Firearms for shooters who need serious long-range capability in a semi-automatic package. Finished in a durable Tungsten Grey Cerakote, this 20-inch-barreled variant carries forward the reliability that made the original M107 a proven anti-materiel rifle with military and precision-shooting professionals alike. A 1-in-15 twist rate stabilizes heavy .50 BMG projectiles for consistent accuracy at extended distances, while the 10+1 magazine capacity keeps you in the fight without constant reloading. Whether you’re stretching distance at the range or need a hard-hitting semi-auto for serious applications, the M107A1 combines decades of Barrett engineering with practical, field-proven features. Adjustable back-up iron sights come standard, giving you a reliable zero even before an optic is mounted.

Key Specifications

• Chambered in .50 BMG, one of the hardest-hitting cartridges available in a semi-automatic rifle.
• Cycles via a recoil-operated semi-automatic action for fast, reliable follow-up shots.
• Features a 20-inch barrel for a balance of velocity and maneuverability.
• Rifled with a 1-in-15 twist rate to stabilize heavy .50 BMG bullets.
• Measures 48 inches overall for a full-size, stable shooting platform.
• Weighs in at 27.4 lbs unloaded.
• Feeds from a 10+1 round capacity box magazine.
• Finished in Tungsten Grey Cerakote for a durable, corrosion-resistant exterior.
• Equipped with adjustable back-up iron sights for a reliable zero with or without an optic.

Frequently Asked Questions

What caliber does the Barrett M107A1 fire? It is chambered in .50 BMG, giving it significantly more downrange energy than standard rifle cartridges.

Is the M107A1 semi-automatic? Yes, it cycles via a recoil-operated semi-automatic action rather than requiring manual bolt operation between shots.

How many rounds does the magazine hold? It feeds from a 10+1 capacity magazine, giving you a substantial reserve of .50 BMG rounds on hand.

Buy the Barrett M107A1 .50 BMG Semi-Auto Rifle

Order the Barrett M107A1 through Schaefer Defense and work with a team that knows big-bore rifles inside and out. This Tungsten Grey Cerakote-finished rifle ships securely and fully insured to your local FFL for transfer, and we’re on hand to help you pair it with the right optic, magazines, and .50 BMG ammunition. Browse our full semi-auto rifles selection to round out your long-range setup.