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Every year we sell thousands of AR 15 lower parts kits. With many of them as part of AR 15 lower build kits. We thought that we should share our bestselling AR 15 lower build kits and explain why they are so popular.For those who like building every aspect of their AR, the lower build kit is the best way to get all of the necessary parts to complete the stripped lower receiver they purchased from their dealer with an FFL. What's in a lower build kit?Everything you need to complete the assembly o …

BRD’s FAB Defense GLR-16 AR 15 Lower Build KitThe FAB Defense GLR-16 AR 15 Lower Build Kit is a superb upgrade for your rifle. It provides you with enhanced versatility with its stock extension and optional adjustable cheek rest.This BRD exclusive kit features: The GLR-16 Stock has uniquely designed rubber butt pad for fast and stable shoulder positioningThe GLR-16 Stock comes equipped with unique patented “anti-rattle” mechanism, so it fits perfectly on both Mil-Spec and commercial after- …

16" 5.56 NATO Cold Hammer Forged Rifle Build KitThe 16" 5.56 NATO Cold Hammer Forged Rifle Build Kit from Black Rifle Depot comes with the Wraith 16" Cold Hammer Forged Upper complete with M16 Black Nitride Bolt Carrier group and Mil-Spec charging handle. Also include is the BRD standard AR 15 Lower Build Kit, which includes all the parts required to finish your AR 15 or variant lower receiver. These kits are 100% American Made and come with the Black Rifle Depot Limited Lifetime Warranty. …

BRD’s 10.5" 5.56 NATO AR 15 Pistol KitThe 10.5" 5.56 NATO AR 15 Pistol Kit comes with everything need to finish your AR 15 lower receiver. This kit includes a complete 10.5" 5.56 NATO Pistol upper with Black Nitride M16 Bolt Carrier Group and mil-spec charging handle. We also added a complete AR 15 Pistol Lower Build kit which has a lower parts kit and pistol buffer assembly. All you need is time to assemble it and your own lower receiver. The Standard Lower Build Kit from Black Rifle Depo …