Troy 15in Alpha Rail No Sight Black. Troy Industries designed these AR Handguards & Forends based on the TRX Extreme design and incorporated a low-profile locking mechanism. Troy 15-inch Alpha Handguards are surprisingly light fit solidly and add an aggressive look. With its versatile mounting options and greater heat dispersion the Troy 15-inch Alpha Rail Hand Guard will make a great addition to your AR. Note: Alpha rails do not work with the TRX Barrel Nut or TRX Barrel Wrench. Specifications for Troy 15in Alpha Rail No Sight: Manufacturer: Troy Color: Black Fabric/Material: Aluminum Gun Make: AR Platform Gun Model: AR-15 Gun Type: Rifle Handguard Length: 15 in Handguard Type: Free-Float Gun Rail: Picatinny Condition: New Included Accessories: Standard Country of Origin: USA Quantity: 1 Features of Troy Alpha 15-inch Free Float Handguard Rail STRX-AL1-15: Genesis of modular free float rails. Built off the revolutionary TRX Extreme design. Utilizes low-profile locking mechanism offering unparalleled strength and stability. Disperses heat and runs cooler than other close-to-the-barrel rails. Comes with two 2-inch and one 4.2-inch detachable rails and all mounting hardware. Machined from 6061-T6 hardened aircraft aluminum and finished in MIL-SPEC Type III Hard Coat Anodizing. Stainless steel components. Works with standard AR15/M16 barrel nut. (Not included.) Easy install solid fit distinctive look. Limited Lifetime Warranty. Package Contents: Troy Alpha 15-inch 1-Piece Quad Rail STRX-AL1-15 Rails Mounting hardware Troy STRX-AL1-15BT-01: 15in Alpha Rail No Sight Black