Yankee Hill Machine Carbine Length Diamond Forearm AR-15. Accepts our end caps and utilize our anti-rotation screws for secure installation. Forearms and barrel nuts are made of 6061-T6 aluminum and hardcoated to military specifications. Jam nut and anti-rotation screws are steel and plated a matte black finish to match. Assemblies include: one jam nut one barrel nut two anti-rotation screws and one forearm tube. Overall length 7.2 inches. Weight 12.5 ounces. Inside diameter 1.75 inches. Specifications for Yankee Hill Machine Carbine Length Diamond Forearm AR-15 YHM-9630-DX: Mfg Item Num: YHM-9630-DX Type: ACCESSORIES - GUN ACCESSORIES - HANDGUARDS AR-15 Parts: AR-15 Parts made in specialized factories: made in specialized factories Tactica: Tactical Master Model Header: Carbine Length Diamond Forearm AR-15 The Yankee Hill Machine Carbine Length Diamond Forearm AR-15 YHM-9630-DX is a quality addition to the Yankee Hill Machine lineup. For more great deals on AR Handguards & Forends by Yankee Hill Machine please browse our Yankee Hill Machine Gun Parts page. Yankee Hill Machine Carbine Length Diamond Forearm AR-15