Yankee Hill Machine Company Black Diamond M-LOK Forearm Features The Yankee Hill Machine Black Diamond M-LOK Forearm uses a free-floating design which isolates the handguard from barrel contact to improve accuracy by preventing pressure points that can shift point of impact. A T-marked extended Picatinny top rail runs the length of the handguard providing consistent mounting space for optics sights or other top-mounted accessories. M-LOK slots positioned at the 3 6 and 9 o clock positions give builders flexible mounting options for lights grips and bipods without needing separate rail sections. This slim and lightweight profile keeps the overall handling characteristics of a carbine length AR-15 build light and maneuverable. Machined from aluminum the handguard measures 7.3 inches long and weighs only 8.3 ounces adding negligible bulk to a completed rifle. A barrel nut and wrench are included simplifying installation for builders assembling their own upper receiver. This combination of light weight and included hardware makes the handguard a straightforward upgrade for AR-15 owners looking to modernize an older carbine length setup. For builders seeking a slim free-floating M-LOK handguard without added weight the Black Diamond is a dependable option. Yankee Hill Machine Company Black Diamond M-LOK Forearm Specifications Manufacturer: Yankee Hill Machine Company Model: Black Diamond M-LOK Forearm Type: AR-15 Handguard Material: Aluminum Length: 7.3 Weight: 8.3 oz Size: Carbine Length Includes: Barrel Nut and Wrench Available At: GrabAGun