LMT MRP-L LM8 AR-15 Upper Receiver Assembly 7.25" is good start for your next LMT piston barrel build or as an upgrade to your existing LMT rifle. This AR-15 Upper provides a generous amount of space on the monolithic rail and on the free-float handguard. The LMT Shovelnose MRP Upper locks the barrel in place using T-30 Torx bit bolts and allows the user to remove the LMT barrel without having to take off the LM8 accessories.Note: This receiver requires the patented LMT monolithic barrel assembly which has a low profile gas block with straight gas tube.Features: 7.25" Freefloat LM8 Handguard Monolithic Top Picatinny Rail Forward Assist Aerospace Aluminum Torx Bit Barrel Mounting System Black FinishLewis Machine and Tool has taken all of their knowledge from their military designs and makes it so that any civilian can own a high-quality precision parts and rifles. All LMT Defense products are 100% made in America and they are a qualified 2005 GSA supplier. Lewis Machine & Tool has also won many awards for their quality engineering and excellence in business.