The Barrett Model 99 (M99) is a single-shot bolt-action rifle chambered in .50 BMG with a 32-inch barrel and a 50-inch overall length. The specification lists weight as 52 lbs total and 25 lbs without the bipod. The M99 is built around long-range precision shooting at distances where .50 BMG performs well beyond the capability of smaller calibers. 
 

Key Specifications 

• Model: M99 
• Caliber: .50 BMG 
• Capacity: 1 round 
• Barrel Length: 32 inches 
• Overall Length: 50 inches 
• Weight: 52 lbs (25 lbs without bipod) 
• Action Type: Bolt Action 
• Trigger Type: Match grade with pull weight of 5-7 lbs 
• Safety Mechanism: Manual thumb lever 
   

Features 

 
The M1913 steel optics rail accepts a wide range of scope mounts. The 3-port high-efficiency muzzle brake manages recoil enough that follow-up shots at targets are practical despite the .50 BMG caliber. The detachable bipod has adjustable legs for uneven terrain. 
 
The match-grade trigger breaks between 5 and 7 lbs with a consistent feel shot to shot. The interrupted buttress-threaded bolt is designed for quick takedown - the barrel separates from the aluminum upper extrusion stock without tools, which simplifies transport and cleaning. The aluminum stock keeps the weight reasonable relative to the caliber's demands. 
 

Uses 

• Long-distance target shooting: The 32-inch barrel extracts maximum velocity from .50 BMG, and the M99's single-shot format suits the deliberate pace of long-range target work. 
• Military and tactical applications: .50 BMG engages targets at distances where smaller calibers lose effectiveness. 
• Collecting and display: The M99 is a distinctive piece in any collection of precision rifles.

Owners and enthusiasts discussing the Barrett M99 focus primarily on its long-range accuracy. The .50 BMG cartridge at full velocity from a 32-inch barrel is capable of accurate shots at ranges most other rifle platforms cannot reach, and that is the central reason people buy this rifle.

Build quality gets consistent praise. The aluminum upper and steel receiver components feel solid, and the muzzle brake's effect on perceived recoil is noted positively - shooting a 52-lb rifle helps too, since mass absorbs what the brake does not.

Weight and portability are the honest tradeoffs. At 52 lbs with the bipod, the M99 is not a rifle anyone carries long distances. Owners acknowledge this is inherent to the format and caliber, not a design flaw. Ammunition availability comes up regularly since .50 BMG is not as easy to find as smaller calibers, and cost per round is meaningfully higher. Price is discussed alongside performance - buyers who want a single-shot .50 BMG precision platform tend to see the M99 as appropriately priced for what it delivers, while those comparing across caliber classes may weigh the use-case more carefully before buying.