Description Diamondback DB175AB001 : This DB15 model features a carbine-length, 4150 CrMov black nitride barrel with an A2 flash hider. Both upper and lower receiver are machined from 7075 T-6 aluminum. It also has a 12" M-lok rail, MOE grip, 6-position stock, and a standard trigger. Firearms, trailers, and some accessories are only available for purchase in stores. Each location follows all BATF and individual state/county/city laws to insure the desired product is legal for sale. Any info provided online is subject to change, please go to your local store for more accurate information.