Colt 9mm Carbine Lower Receiver Assembly

(19 reviews)
Current Stock:

Colt 9mm Carbine Lower Receiver Assembly


Factory Colt complete lower receiver assembly to build your 9mm Carbine. Compatible with all mil-spec 9mm AR upper receivers and roll marked "COLT AR-15 9mm Carbine". Manufactured to truly meet and exceed all Mil Spec standards.

This item is a serialized part, considered a firearm and requires transfer through a FFL


  • 5
    It’s a Colt!

    Posted by Phil Herbert on 22nd Apr 2023

    I’ve had a number of Colt 9mm AR15s in both pre-ban and post-ban configurations and I even used the Colt smg professionally. Colt is one of the finest manufacturers of AR15 products in the world. While others have faltered, Colt’s steadfast quality hasn’t. This lower is no different. I had the upper on a CMMG Mk9 lower and it I wanted all Colt, and this lower fits the build with a Daniel Defense butt-stock and pistol grip trigger guard unit

  • 5
    Colt complete lower. Great Transaction 02/13/2023

    Posted by Hector Gaytan on 17th Feb 2023

    Bough complete Colt Lower. Great fit brand new as described. First time buyer here, buy with confidence. Fast shipping.

  • 5
    Exactly as described

    Posted by Dan Gonzalez on 8th Jan 2018

    If you're iffy on the paint job it's a hydro dip and seems pretty tough. The colors look better than the picture, more matte. Everything else is all Colt, nuff said.

  • 5
    Colt 9mm Carbine Upper/Lower Receiver Assembly Set

    Posted by Robert Arndt on 8th Jan 2018

    Colt made very few, fit and finish were flawless

  • 5
    Colt 9mm upper and lower receivers

    Posted by Rodney C Lettelier on 8th Jan 2018

    This is the third receiver I have purchased from Arms Unlimited and like the previous two (m4,m4 piston) I have been fully satisfied .Unlike some others that have gotten theirs with blemishes mine have been in as new condition...I will continue to order from them in the future as my needs arise.

  • 5
    Tiger stripe 9mm Colt AR

    Posted by Alex Rodriguez on 8th Jan 2018

    Sharp looking camouflage but it is a little thick in some places. However lock up is tight with zero wiggle. Can't go wrong with a Colt especially a 9mm at this price point.

  • 5
    Nice 9mm

    Posted by Levi Williams on 8th Jan 2018

    Everything was smooth and the combo set looks great

  • 5
    Best deal in upper lower

    Posted by Noguerac on 8th Jan 2018

    Very tight lock. Is an AR with a block in mag well. Great job made by Colt. Trigger good quality but needs A trigger job Can beat the deal for 300. Buffer top quality. Buy it

  • 5
    Bought 6 - assembled one

    Posted by Kristen Randall on 8th Jan 2018

    Bought 6 of these, they all had some degree of handling marks in finish, so expect it, you will not be shocked. Assembled and shot one at a 3 gun in Muncie Pa. the carbine cycled flawless with a ramped Colt bolt and 32rd Colt mags. We are very pleased with out purchase. K & R Gillett Pa