The Armalite AR-10 in the 3-Gun configuration is a semi-automatic rifle chambered in .308 Win / 7.62 with a 13.5-inch barrel and a tunable muzzle brake. The overall assembled length is 16 inches, and it ships with a 20-round magazine. The black finish and competition-oriented brake make it a purpose-built 3-gun platform. 
 

Key Specifications 

• Brand: Armalite 
• Model: AR-10 
• Caliber: .308 Win 
• Action: Semi Auto 
• Capacity: 20 rounds 
• Barrel Length: 13.5 inches 
• Color/Finish: Black 
   

Detailed Features 

• Semi-automatic AR-10 pattern in .308 Win / 7.62 
• 13.5-inch barrel with tunable muzzle brake for competition use 
• 16-inch overall assembled barrel length as stated by vendors 
• 20-round magazine included 
• Black finish throughout

Owners of the AR-10 in this 3-gun trim find the tunable brake a genuine advantage at the range, letting them dial in felt recoil to their preference. The .308 Win chambering delivers the energy needed for steel targets at distance, and the 13.5-inch barrel keeps the platform maneuverable. Some owners note the shorter barrel does affect velocity compared to longer AR-10 builds.

The Armalite AR-10 has a longstanding reputation in the AR-10 pattern market, and owners generally trust the fit and finish. The 3-gun configuration draws mixed feedback from those who want a more general-purpose rifle, since the tunable brake and barrel length optimize it for one specific use case rather than versatility.

At its price, the AR-10 competes with several other .308 semi-automatic platforms. Long-term owners tend to stick with Armalite for parts availability and the platform's track record, while newer buyers sometimes weigh it against competing brands with more recent designs.