Knights Armament KAC SR-15 CQB E3 Mod 2 11.5" M-LOK Upper Receiver Group

limited availability, when in-stock, ships from our shop in 3 to 5 days
Product arrives once a year.


Knight’s Armament Company, or KAC, is known to many for their top tier, military issued rifles and parts.

Charlie's is proud to offer the Knight’s Armament SR-15 MOD 2 Close Quarter Battle (CQB) factory built, complete upper receiver that allow you to easily complete a build or upgrade a rifle with battle proven quality.

Built around a chrome lined, cold hammer forged barrel in 11.5” length with a Mod 2 gas block, and fitted with a KAC 3 prong QDC suppressor compatible flash hider.

The Knight’s Armament SR-15 MOD 2 complete upper receivers feature the URX M-LOK handguards that each have 2 anti-rotation QD sling swivel sockets and even includes a Magpul M-LOK rail cover kit.

On top you’ll find the KAC Micro Front Sight and at the rear the KAC 200-600m micro rear sight that is flip up and adjustable for windage and elevation. The included bolt carrier group features the E3 bolt that has rounded locking lugs that work in conjunction with the E3 barrel extension.

Also included is an extended latch charging handle. Some M-LOK furniture and a carbine buffer, matched to the BCG weight and gas system dynamics is also included.

Note:  Charlie's also offers this exact model, as a "new take-off," meaning we get a new rifle in, and take that rifle apart between upper and lower.  See here.

All NFA laws apply.  If this upper is installed on a rifle lower, it will become a Short Barreled Rifle, and subject to NFA registration.  You can install this upper on an eligible AR lower to build a lawful pistol lower.  Be sure you know the law.

Note:  All ITAR regulations apply.  Charlie's deals in the real McCoy.  Your item most likely has parts that cannot be shipped outside of the USA, or owned in the USA by non-US Persons. 

Part KM-31963