THIS IS FOR EDUCATIONAL PURPOSES ONLY!!!! I am a nerd and like models. I wanted to build a replica of the old law enforcement AR9's. Colt AR9 mags are old fashion, but they still look cool! This is V3 of this model, but I am releasing it to open beta. This lower is based off of the Anderson Hellfire and you will need the original file set to complete this build. Due to the geometry of the Colt magazine a feed ramp is needed. To install the feed ramp you will need to use a threaded heat insert that fits 3mm bolts. The mag releases do need some work. The mag releases also need a threaded heat insert. The mag release works with a strong pen spring. This lower should use standard two bolt ejectors. If there are problems or questions email youngandtacticalg19@gmail.com