♦ Professional grade, one piece free float design and construction ♦ Simple installation ♦ Super lightweight ♦ 15.00" model weighs only 9.3 oz with barrel nut ♦ Super slim 1.5 inch outside diameter, 1.3 inch inside diameter♦ Eight sides of KeyMod compatible slots ♦ One five slot KeyMod compatible aluminum rail section included ♦ Proprietary barrel nut and barrel nut wrench included ♦ Patented Torque Plate System US Patent Number 9,453,694♦ Five anti-rotation QD sling swivel sockets ♦ High quality MIL-STD 1913 top rail ♦ Rugged construction from 6061 aluminum, hard coat anodized for a lifetime of service ♦ Fully dehorned for a non-abrasive, comfortable feel ♦ 100% Made in America - Keeps America Working ♦ MI Lifetime WarrantyIMPORTANT COMPATIBILTY NOTES! Due to the many different dimensions in BILLET UPPER RECEIVERS on the market, please contact your billet upper receiver manufacture to insure fit of this handguard. This handguard is compatible with forged upper receivers as well as the Midwest Industries billet upper receiver. NOT FOR USE ON GAS PISTON AR's!