There's a lot of meat on the original AR-15 design that doesn't actually need to be there to have a fully functioning rifle. F1 Firearms recognized that, and they decided to strip away all the unnecessary bulk in the design, giving you a slim, trim, lightweight package that still runs like a top. The F1 Firearms BDRX-15 Skeletonized Rifle is loaded with upgraded features, so you'll love shooting your rifle as much as you love carrying it. Each F1 Firearms BDRX-15 Skeletonized Rifle is built on the company's patented skeletonized receiver, which incorporates F1's X7M handguard in a fully unified design. In addition to being incredibly lightweight, this receiver als Mfg: F-1 Firearms