Knight's Armament SR-25 A2 | Upper Receiver Kit

The Knight’s Armament SR-25 A2 Upper Receiver Kit is a factory-configured upper designed for SR-25 pattern rifles chambered in 7.62 NATO / .308 Winchester. It features a 20-inch barrel constructed from ORD 4150 steel with 5R cut rifling and a 1:10 twist rate. The dimpled hybrid medium profile is designed to balance weight and heat dissipation, making it suitable for a variety of shooting applications including precision and extended-range use. The upper is paired with an M-LOK compatible handguard for flexible accessory mounting.

This upper receiver kit includes a complete bolt carrier group with the E2 bolt, charging handle, and a compatible muzzle device. Additional components include front and rear micro iron sights, an M-LOK to Picatinny rail section, an M-LOK QD sling adapter, and an H2 buffer. The included components provide a comprehensive upper assembly for users seeking a complete and ready-to-install solution for large-frame AR platforms.

Specifications

• Caliber: 7.62 NATO / .308 Winchester
• Barrel Length: 20 in (50.8 cm)
• Barrel Material: ORD 4150 steel
• Rifling: 5R cut rifled
• Twist Rate: 1:10
• Barrel Profile: Dimpled hybrid medium profile
• Handguard: M-LOK compatible
• Bolt Carrier Group: Included with E2 bolt
• Charging Handle: Included
• Muzzle Device: Included
• Sights: Front and rear 600m micro iron sights included
• Accessories Included:
  • M-LOK to Picatinny rail section
  • M-LOK QD sling adapter
  • H2 buffer