Description
For shooters operating across U.S. ranges, training facilities, and long-distance precision applications, the Barrett Firearms M107A1 with a 20-inch barrel in .50 BMG represents a specific tool for specific work. This semi-automatic rifle is designed for those who require consistent, repeatable accuracy at extended ranges, whether for target engagement, ballistic testing, or professional marksmanship development. As a licensed FFL retailer, CS Firearms offers this model with clear specifications and straightforward shipping to your chosen FFL dealer.
What This Product Is and Who It Is For
The Barrett M107A1 is the current production variant of the long-established M82 platform, chambered in .50 BMG (12.7x99mm NATO). This is a semi-automatic, long-range rifle intended for shooters who need to place rounds on target at distances beyond the capability of standard calibers. It is not a home defense firearm, nor is it suited for concealed carry or typical hunting scenarios. Instead, this rifle serves target shooters, competitive long-range marksmen, law enforcement and military personnel training with heavy-caliber systems, and collectors who value engineering precision. The 20-inch barrel configuration offers a balance between portability and velocity retention, making it a practical choice for those who transport their rifle to various ranges.
Key Specifications
- Caliber: .50 BMG (12.7x99mm NATO)
- Action: Semi-automatic, gas-operated with dual-chamber muzzle brake
- Barrel Length: 20 inches (508 mm)
- Overall Length: 48 inches (1,219 mm)
- Weight: Approximately 28.5 pounds (12.9 kg) unloaded
- Finish: Flat Dark Earth (FDE) Cerakote on aluminum upper and lower receivers; black on steel components
- Sights: None included; MIL-STD-1913 Picatinny rail for optics mounting
- Magazine Capacity: 10-round detachable box magazine
- Stock: Adjustable bipod and monopod; soft rubber buttpad
- Safety: Manual thumb safety; firing pin block
Feature Deep-Dive
The Barrett M107A1 improves upon the M82 design through several refinements that affect handling, maintenance, and operational life. The most visible change is the use of a lightweight aluminum upper receiver instead of the steel used in earlier models. This reduces overall weight by approximately 4 pounds, making the rifle easier to carry to a firing position and less fatiguing during extended range sessions. The aluminum receiver is hard-coat anodized and finished with a Cerakote coating that resists corrosion and wear from environmental exposure, which is relevant for shooters operating in varied U.S. climates from humid coastal ranges to dry desert environments.
The 20-inch barrel is cold hammer-forged from chrome-moly vanadium steel and features a chrome-lined bore for extended service life. This barrel length is shorter than the standard 29-inch barrel found on the M82A1, which reduces overall length by 9 inches while still maintaining sufficient velocity for .50 BMG ball and match ammunition to remain supersonic past 1,500 meters. The barrel is fluted to aid heat dissipation during rapid fire and is fitted with a dual-chamber muzzle brake that reduces felt recoil to approximately that of a 12-gauge shotgun. This brake is specifically designed to be compatible with Barrett’s QDL (Quick Detach Suppressor) system, should the user choose to add a sound suppressor in compliance with NFA regulations.
The gas system on the M107A1 uses a short-stroke piston design that vents excess propellant gas forward through the muzzle brake, reducing fouling in the action and improving reliability over extended firing schedules. The bolt carrier group is nickel-Teflon coated for smoother cycling and easier cleaning. The charging handle is non-reciprocating and can be mounted on either side of the receiver, accommodating left-handed shooters or those using barricades. The trigger is a single-stage design with a pull weight of approximately 6.5 pounds, offering a clean break with minimal overtravel.
The stock assembly includes a fully adjustable bipod mounted to the forend and a rear monopod that can be adjusted for elevation and cant. The bipod legs lock into position with positive detents and can be spread for stability on uneven ground. The buttstock is adjustable for length of pull and cheek height, allowing the shooter to achieve proper eye alignment with mounted optics. The soft rubber buttpad reduces shoulder fatigue during sustained fire. The lower receiver houses a 10-round detachable box magazine that releases via a paddle located forward of the trigger guard, compatible with all standard Barrett M82/M107 magazines.
Field stripping the M107A1 for cleaning does not require tools. The barrel can be removed from the receiver by rotating the barrel lock lever, allowing the user to separate the upper and lower assemblies for transport in a smaller case. The bolt assembly disassembles into three components for cleaning and inspection. Barrett includes a cleaning kit and a hard case with foam inserts for storage and transport. The rifle ships with one magazine, a sling, and a manual that covers maintenance intervals and lubrication points specific to the .50 BMG cartridge.
Barrett’s manufacturing process includes magnetic particle inspection of critical components and proof testing of each barrel. The M107A1 is built to NATO standards for interchangeability of parts, meaning replacement components are available through Barrett’s parts network. The rifle is also compatible with Barrett’s line of aftermarket accessories, including spare magazines, replacement barrels in different lengths, and the QDL suppressor system. For shooters who intend to mount a night vision device or thermal optic, the Picatinny rail is continuous along the top of the receiver and provides sufficient real estate for clip-on or dedicated systems.
Ideal Use Cases
This rifle is best suited for stationary or supported shooting positions at established ranges with distances of 500 meters or greater. Target shooters will appreciate the consistency of the semi-automatic action for follow-up shots during string fire. Long-range competitors in matches such as the .50 Caliber Shooters Association events will find the 20-inch barrel meets weight and length requirements for many competition classes. Law enforcement and military personnel use the M107A1 for ordnance disposal, barrier penetration, and precision interdiction at extended ranges. Collectors of military-issue firearms will note that the M107A1 is the current standard-issue variant for U.S. military branches, with a production history that includes service in multiple theaters. This rifle is not intended for hunting due to the substantial weight and caliber, though it is legal for use on large game in states that permit .50 caliber rifles.
Compatibility Notes
The M107A1 is chambered for .50 BMG (12.7x99mm NATO) ammunition. It functions reliably with M33 ball, M8 API, M17 tracer, and commercial match loads from manufacturers such as Hornady, Federal, and Lapua. Do not use reloaded ammunition unless it is loaded to SAAMI specifications and headspace-checked. The 10-round magazine is the only factory option; no aftermarket high-capacity magazines are available for this platform. Holsters are not applicable. The Picatinny rail accepts any MIL-STD-1913 compatible scope mount, bipod, or accessory. Recommended optics include variable-power scopes with 20-40x magnification or fixed-power scopes such as the Nightforce ATACR or Schmidt & Bender PM II series. The barrel is compatible with Barrett’s QDL suppressor system, which requires a separate NFA tax stamp and registration. Spare barrels, bolts, and firing pins are available through Barrett’s parts department.
Frequently Asked Questions
Q: How does shipping work for this rifle to my U.S. address?
A: CS Firearms ships all firearms to a licensed FFL dealer in your state. After placing your order, we will contact you to confirm your chosen FFL’s information. We ship via UPS or FedEx with adult signature required. Shipping is free to the lower 48 states. Alaska and Hawaii may incur additional charges. You must be 18 or older to purchase a long gun from a licensed dealer.
Q: What is the FFL transfer process and how do I find a dealer?
A: Once your order is placed, you will need to provide the name and address of a licensed FFL dealer who will receive the rifle on your behalf. If you do not have a dealer, we can help locate one near you through our network. The dealer will conduct the required background check (NICS) upon your arrival to pick up the firearm. Transfer fees are set by the receiving dealer and are not included in the purchase price from CS Firearms.
Q: What ammunition is compatible with this rifle?
A: The M107A1 is designed for .50 BMG (12.7x99mm NATO) ammunition. It will cycle reliably with factory-loaded ammunition from major manufacturers. We recommend using ammunition that matches the barrel’s 1:15 twist rate, which stabilizes bullet weights from 647 to 800 grains. Avoid using surplus or corrosive ammunition, as it may accelerate barrel wear. Always verify headspace before firing any reloaded ammunition.
Q: What warranty does Barrett provide for the M107A1?
A: Barrett Firearms offers a limited lifetime warranty to the original purchaser. This covers defects in materials and workmanship for the life of the rifle. The warranty does not cover damage from misuse, improper maintenance, or use of non-standard ammunition. Barrett’s customer service can be reached directly for warranty claims. CS Firearms does not process warranty claims but will assist with contacting Barrett if needed.
Q: Can I return this rifle if I change my mind?
A: Due to federal regulations and the nature of firearm sales, CS Firearms does not accept returns on firearms after they have been shipped from our facility. If there is a defect or damage during shipping, we will work with you and Barrett to resolve the issue. Please inspect the rifle at your FFL dealer before accepting the transfer. If you decline the transfer, the rifle will be returned to CS Firearms, and a restocking fee may apply.
Closing Call to Action
CS Firearms stocks the Barrett M107A1 with the 20-inch barrel in .50 BMG for shooters who need a field-ready, semi-automatic long-range system. We offer fast shipping to your chosen FFL dealer across the United States and provide assistance with the transfer process. For questions about inventory, lead times, or compatibility, contact our sales team. Place your order through the CS Firearms website for direct processing.
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