The Knight’s Armament SR-15 KS-1 Upper Receiver Kit is a factory-configured upper designed for AR-15 platform rifles chambered in 5.56 NATO. It features a 13.7-inch cold hammer forged barrel with a 1:7 twist rate and chrome-lined bore, paired with a durable handguard utilizing the M-LOK interface system. The barrel’s heavy profile and dimpled design contribute to heat management and consistent performance across a variety of shooting applications.
This upper receiver kit includes a complete bolt carrier group with the E3.2 bolt, charging handle, and a compatible muzzle device, along with a selection of Knight’s Armament accessories. Also included are low-profile micro front and rear iron sights, an M-LOK to Picatinny rail section, an M-LOK QD sling adapter, and a H2 buffer. The package provides a comprehensive upper assembly suitable for users seeking a complete and ready-to-install solution.
Specifications
- Caliber: 5.56 NATO
- Barrel Length: 13.7 in
- Barrel Type: Cold hammer forged, chrome lined
- Twist Rate: 1:7
- Barrel Profile: Dimpled heavy profile
- 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
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