The Auto-Ordnance TAO50 is a semi-automatic rifle chambered in .50 BMG with a blued finish and a Magpul PRS Gen 3 stock. The 29-inch barrel has a 1-in-15 rate of twist, overall length is 61 inches, and the rifle weighs 25.5 lbs. It uses Barrett M107A1 magazines and comes with one 10-round magazine and an Accu-Tac bipod. No sights are included. The receiver is optics ready. 
 

Key Specifications 

• Manufacturer: Auto-Ordnance - Thompson 
• Family: TAO50 Series 
• Model: TAO50 
• Type: Rifle 
• Action: Semi-Auto 
• Caliber/Gauge: .50 BMG 
• Finish: Blued 
• Stock/Grips: Magpul PRS Gen 3 Stock (Collapsible / Folding) 
• Barrel Length: 29" 
• Overall Length: 61" 
• Rate of Twist: 1-in-15 
• Capacity: 10 + 1 rounds (uses Barrett M107A1 magazines) 
• Weight: 25.5 lbs. 
• Sights Type: None (optics ready) 
   

Detailed Features 

The blued finish is traditional and requires more attention to moisture than a parkerized or anodized surface, but it holds up well when properly maintained. The Magpul PRS Gen 3 stock adjusts both length of pull and comb height, letting different shooters establish a consistent cheek weld behind an optic. The 29-inch barrel and 1-in-15 twist work with heavier .50 BMG projectiles at long range. The Accu-Tac bipod provides stable support from a prone or bench position and handles uneven surfaces well. 
 
At 25.5 lbs., the rifle mass helps absorb the .50 BMG recoil impulse, making sustained range use more manageable. The tradeoff is mobility. This is not a rifle you carry far from a vehicle.

Feedback on the TAO50 with the Magpul PRS stock centers on a few practical topics. Accuracy and reliability under semi-auto fire are the most consistent positives. Shooters report solid performance at long ranges with appropriate ammunition and optics. The PRS stock's adjustability is a genuine point of praise; being able to tune the fit without replacing the stock is a practical advantage.

Weight is the most common criticism, though many buyers expect it going in. At 25.5 lbs. unloaded, it's realistically a bench or prone rifle. Portability beyond a shooting position requires planning. Recoil with .50 BMG is inherently significant, but most users find the rifle handles it better than lighter alternatives in the same caliber.

Ammunition cost and availability are recurring practical concerns. .50 BMG is expensive and not universally stocked, which means many owners shoot it less often than they'd like. The rifle's price sits at the higher end of the semi-auto .50 BMG market; opinions split on whether it justifies the cost, though most who bought it report being satisfied with the build quality. The Thompson brand connection draws some collector interest alongside the shooter audience.