Knight's Armament SR-15 E3 Mod 2 5.56mm NATO 16 in Semi-Auto Rifle with URX4 M-LOK Rail, Ambidextrous Controls, and KAC Micro Sights
This Knight's Armament SR-15 E3 Mod 2 stands out with its 16-inch chrome-lined, hammer-forged barrel, KAC E3 enhanced bolt design, and fully ambidextrous lower-receiver controls. The rifle features the KAC URX4 free-float M-LOK handguard with a continuous top Picatinny rail and integral QD sling socket, and it comes equipped with KAC micro folding iron sights. Factory markings note Titusville, Florida manufacture and the Stoner Rifle lineage.
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: Light handling marks are visible on exterior surfaces from prior use. The bore presents a bright, clean appearance. Please refer to the photos for close-up views of the noted areas.
What's Included
- Original case
- 1x 30-round windowed Magpul PMAG polymer magazine
- Knight's Armament vise block (KAC-branded)
- KAC micro folding front and rear iron sights (installed)
The SR-15 E3 Mod 2 configuration pairs a 16-inch, chrome-lined, hammer-forged barrel with a 1:7 twist and a threaded muzzle capped by a three-prong flash hider. Its direct-impingement system is matched with the KAC E3 enhanced bolt design, a hallmark feature of this series.
The URX4 free-float M-LOK handguard (marked P/N 31885-1450) offers a continuous top Picatinny rail and an integral QD sling socket. The flattop upper includes a forward assist, shell deflector, and dust cover. KAC micro folding front and rear iron sights are installed.
Controls and ergonomics reflect the Mod 2 updates, including fully ambidextrous lower-receiver controls and an ambidextrous magazine release. The carbine-length receiver extension supports an adjustable, collapsible stock, and the rifle is fitted with a black polymer pistol grip.
Receivers are aluminum with a matte black anodized finish, complemented by the aluminum URX4 handguard. Markings observed include "SR-15 5.56mm KNIGHT'S MFG. CO. TITUSVILLE, FL USA" on the right magwell, "MOD 2" on the left upper, and the "STONER RIFLE" crest on the left magwell. Capacity is 30+1 in 5.56mm NATO.