Knight's Armament SR-25 E2 APC 7.62 NATO 16-inch Semi-Auto Rifle with URX 4 M-LOK, Ambidextrous Controls, KAC Match Trigger, and Flip-Up Sights
This Knight's Armament SR-25 E2 APC is a 7.62x51 NATO, 16-inch semi-automatic rifle built on the AR-10 platform with KAC's proven E2 enhancements. It features a free-floated URX 4 M-LOK handguard, ambidextrous lower controls, a KAC two-stage match trigger, and flip-up iron sights. The continuous T-marked top rail supports optic and accessory mounting, and the barrel uses 5R rifling with a 1:10 twist. It comes with the factory hard case, manual, one 20-round magazine, and a KAC 100-yard qualification target dated April 30, 2015 that identifies the rifle model with matching serial information.
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: There are a few light handling marks from prior use.
What’s Included
- Knight's Armament factory hard case
- Knight's Armament SR-25/M110/Mk11 Operation Manual (spiral-bound)
- Knight's Manufacturing Company 100-yard Qualification Target sheet (dated 30 Apr 2015)
- 1x 20-round SR-25-pattern metal magazine
The SR-25 E2 APC configuration combines a 16-inch barrel chambered in 7.62x51 NATO with KAC's E2 architecture and direct-impingement operating system. The barrel uses 5R rifling and a 1:10 twist, a pairing well-suited to common 7.62 NATO loads. A multi-prong flash hider with a QD-style collar is installed at the muzzle.
The lower receiver is fully ambidextrous, including the safety and magazine release, and adds a right-side bolt-release for efficient manipulation. A KAC two-stage match trigger is installed. Ergonomics are enhanced with an ERGO rubberized pistol grip and a Magpul STR adjustable carbine stock.
The KAC URX 4 free-float aluminum handguard provides M-LOK slots for accessory placement and includes an integrated QD sling socket. A continuous, T-marked 12 o'clock Picatinny rail runs the length of the upper for mounting optics and accessories. Included flip-up front and rear sights provide a ready backup sighting option. The URX4 is factory-marked "KNIGHTARMCO.COM" and "URX4 P/N 31887-1500."
The upper receiver is configured without a forward assist and includes an ejection-port cover. This rifle was produced in the USA and includes documentation from Knight's, including a 100-yard qualification target dated April 30, 2015 identifying the SR-25 APC with matching serial information.