Civilian model

Colt released the LE901-16S to civilian buyers on July 20, 2012. Colt planned to release several variants of the CM901 system, with the civilian "LE901-16S" being the first. The civilian model will be available with all the same features and finishes as the planned Law Enforcement and Military models, but will ship stock with a semi-automatic lower receiver, and an upper receiver with a 410 millimetres (16.1 in) barrel chambered for .308 Winchester ammunition. The barrel will come with a Vortex Flash hider. This variant will also accept civilian AR-15 upper receivers of multiple barrel lengths, and includes a magazine well adapter to accommodate smaller AR-15 magazines.^{[citation needed]}

Colt CK901

In June 2014 Colt Canada announced the new CK901 (Colt-Kalashnikov) in an interview with IHS Jane's at Eurosatory.^[4] It is a direct-impingement AR-AK hybrid chambered in 7.62×39mm that is similar to the KAC SR-47. The standard carbine has a 16-inch barrel, a monolithic picatinny rail along the upper receiver, a three-position accessory rail forend (sides and bottom), folding front sight, detachable rear sight, ambidextrous charging handle, and an ambidextrous 3-position selector (AUTO-SEMI-SAFE). The carbine weighs in at 3.6 kg (7.9 lbs) without accessories^[5] and 4.5 kg (9.92 lbs.) with accessories (like a loaded magazine and sling).^[6] A Short-Barreled Rifle (SBR) version with a 13-inch barrel is also rumored to be in the works. It comes with polymer 30-round AK-style magazines manufactured by US-Palm.^[7] It can supposedly feed from any AK-47-interface magazines, but cannot feed from AK-47/RPK-type drum magazines due to its longer magazine well.

The CK-901 was first sold to the Yemeni Republican Guard in 2014.^[8] Rifles made for that order can be identified by a serial number with the YEM prefix. Further contracts in the Middle East and the Gulf States are being sought. There is talk of a civilian model, but none have surfaced as yet.

Potentially, like the modular CM901, the CK-901 could be made to chamber the smaller-bore Soviet 5.45×39mm M-74 round. Much like the CM901 7.62 NATO / 5.56mm NATO rifle, it could be made to chamber the smaller-bore ammunition from a changed-out upper receiver. It would feed from AK-74-type magazines through an adapter block for the larger 7.62mm Soviet magazine well in the lower receiver.