The Knights Armament SR-25 E2 Precision Carbine M-LOK is a semi-automatic rifle chambered in .308 Win with a 16-inch barrel and direct impingement operation. At 9 lbs with a 20+1 capacity, it's built for precision over lightweight portability. 
 

Key Specifications 

• Model: SR-25 E2 Precision Carbine M-LOK 
• Manufacturer: Knights Armament 
• Caliber: .308 Win 
• Barrel Length: 16 inches 
• Weight: 9 lbs 
• Capacity: 20+1 rounds 
• Action Type: Semi-Auto (Direct Impingement) 
• Trigger Type: Two-stage Match Trigger 
• Stock Type: Adjustable 
• Grip Type: Standard 
• Muzzle Type: Flash Hider 
• Finish Color: Black 
• Sights Available: Flip-Up 
• Optic Mounting System: 1913 Picatinny Rail 
   

Detailed Features 

The 16-inch barrel has a 1:10 twist rate, which stabilizes a wide range of .308 bullet weights. The two-stage match trigger gives a defined first-stage take-up followed by a clean break, which benefits precise shot placement compared to single-stage triggers with more travel. 
 
The adjustable stock accommodates different shooter sizes and shooting positions. The M-Lok handguard keeps the rifle light while offering attachment points for lights, grips, and bipods without adding unnecessary bulk. Flip-up sights provide a backup when running optics on the Picatinny rail.

The Knight SR-25 E2 Precision .308 Carbine is consistently described as a well-made, reliable rifle that delivers the accuracy expected from a match-grade platform. The two-stage trigger and billet construction are frequently cited as distinguishing features over less expensive .308 semi-autos.

Accuracy feedback is strong at both short and long range. The M-Lok rail system gets good marks for customization flexibility. Ergonomics are generally positive, with the adjustable stock and balanced weight distribution working for most body types.

The 9-lb weight is flagged occasionally by users who compare it against lighter AR-10-pattern alternatives. Price is the most common friction point. The SR-25 carries a premium that some buyers find hard to justify against competing .308 platforms with similar specs at lower cost. That said, the majority of long-term owners view the quality and build as worth the investment, particularly for sustained-use roles. Brand reputation within the professional and competitive shooting community adds to its appeal among collectors and serious shooters alike.