Knight's Armament SR-15 KS-3 | Upper Receiver Kit

The Knight’s Armament SR-15 KS-3 Upper Receiver Kit is a factory-configured upper receiver designed for AR-15 platform rifles chambered in 5.56 NATO. It features an 11.5-inch cold hammer forged barrel with a 1:7 twist rate and chrome-lined bore, offering durability and consistent performance in a compact configuration. The upper is paired with an M-LOK compatible handguard, allowing for flexible accessory mounting while maintaining a streamlined profile.

This upper receiver kit includes a complete bolt carrier group with the E3.2 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 suitable for users seeking a complete and ready-to-install solution.

Specifications

• Caliber: 5.56 NATO
• Barrel Length: 11.5 in
• Barrel Type: Cold hammer forged, chrome lined
• Twist Rate: 1:7
• Handguard: M-LOK compatible
• Bolt Carrier Group: Included with E3.2 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