Knight's Armament SR-30 Mod 2 (Custom) with SR-15 E3 Mod 2–Pattern 16-Inch 5.56 NATO Upper, URX 4 M-LOK, Ambidextrous Controls
This custom KAC build pairs an SR-30 Mod 2 lower receiver with an SR-15 E3 Mod 2–pattern 16-inch 5.56 NATO upper. It features the KAC URX 4 free-float M-LOK handguard with a continuous top Picatinny rail, ambidextrous control architecture including a right-side bolt catch bar, and an ambidextrous KAC-marked charging handle. The rifle includes a compliant magazine setup and a ported muzzle brake/compensator, all in very good overall condition with an excellent bore.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: This firearm is in great shape with minor scratches and blemishes present. The upper receiver shows blemishing near the junction with the handguard. The magazine release has been swapped to a compliant option.
What’s Included
- Vault hard rifle case
- CompMag polymer compliant/fixed magazine installed
- M-LOK rail cover panels installed on handguard
- M-LOK hand stop installed
- M-LOK short Picatinny rail section installed
- Ported muzzle brake/compensator installed
This rifle uses an SR-30 Mod 2 lower receiver that is rollmarked "CAL: .300 BLACKOUT" and is assembled with a KAC SR-15 E3 Mod 2–pattern 16-inch upper in 5.56 NATO. It is a semi-automatic, direct-impingement AR-15 configuration with a 10+1 capacity.
The control layout is fully ambidextrous, including a right-side bolt catch bar and an ambidextrous KAC-marked charging handle. The magazine release has been swapped to a compliant option, and a CompMag fixed magazine is installed.
The KAC URX 4 free-float M-LOK handguard provides modular accessory mounting with a continuous 12 o'clock Picatinny rail. An aftermarket ported muzzle brake/compensator is installed on the threaded barrel to manage muzzle movement.
Furniture includes a Magpul MOE SL-S 6-position stock and an ERGO rubberized pistol grip for secure handling. Receivers and handguard are aluminum with a hard-anodized finish. This rifle is made in the United States.