Elevate your firearm's performance with the Presma UMMARA15 15" Super Light M-LOK Free Float Handguard. Crafted for precision and enhanced functionality, this handguard is the ideal upgrade for serious gun enthusiasts. Constructed from CNC machined 6061-T6 aluminum and finished with a black anodized coating, the UMMARA15 guarantees durability without the excess weight. Designed for versatility, it features M-LOK slots and a partial Picatinny top rail for endless customization. Super light weight at only 14oz with barrel nut 15" length for optimal performance Includes steel barrel nut and fixing screws Compatible with 223/5.56 and AR pistol builds Machined and anodized in the USA Included:- Steel barrel nut (1)- Fixing screws (2)- Shim rings for barrel nut timing (2)- 3 slot M-LOK to Picatinny adapter rail (2)- 7 slot M-LOK to Picatinny rail (1)- M-LOK screw sets (3) Maximize your shooting experience with the Presma UMMARA15 - engineered for accuracy and adaptability. Measures: 15" Long, 1.6" wide, 2.0" heightWeight: 14ozInner diameter:There are small reinforcement ridges inside. Ridge to ridge I.D. is 1.28". Interior wall to wall I.D. is 1.45"These will fit 223/5.56 uppers. Will also fit AR Pistol builds that have 223/5.56 upper barrel nut threading such as the 300 Blackout and the AR-9.