Knight’s Armament SR-15 E3 Carbine 14.5″ Mod 2 M-LOK SBR


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KAC PN 31946

This is easily my favorite rifle — just slap a MAMS on this guy for the flattest and fastest shooting experience!

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Knight’s Armament SR-15 E3 Carbine 14.5″ Mod 2 M-LOK SBR

KAC PN 31946

The SR-15 E3 MOD 2’s 14.5” chrome lined, 5.56mm NATO barrel is manufactured to military specifications, features a proprietary mid-length gas system that increases reliability and durability while also reducing felt recoil, and is free-floated inside a 13” URX 4 handguard. An E3 round-lug bolt design both enhances function and increases bolt life far beyond the industry standard. An ambidextrous bolt release, selector, and magazine release offer left-handed users the ergonomic advantages inherent to AR15-based controls. The drop-in two-stage trigger serves double duty as an aid to precision marksmanship while enabling surgical speed shooting at close range. The 5.56mm 3-Prong Flash Eliminator interferes with propellant gas combustion forward of the muzzle to significantly reduce flash signature, will not ring upon firing or when struck, and is compatible with the KAC line of 5.56mm QDC Signature Reduction Devices.

Marked ‘SR-15 SBR’ and ‘5.56mm’

Rifle ships complete along with 5-Slot M-LOK Rail (PN 31912), Magpul Type 2 M-LOK covers, gun lock and operator’s manual.

Barrel: 14.5″ (29cm), 1:7 Twist
Caliber: 5.56 NATO
Weight: 6.3lbs (2.86kg)
Length: 32″ (73.6cm) – 35″ (81.3cm)

This is a regulated item and requires shipment to a FFL/SOT holder. After you have placed your order, please have your order number and a copy of your preferred store’s FFL/SOT emailed to to avoid delays. After I have received their FFL/SOT, I will file a Form 3. Upon approval, I will ship your order as soon as possible!

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