These 2.5” long accessory rail segments fit Diamondhead’s V-RS Modular Drop-In Handguard platform or the V-RS Free-Float forend to allow more side rail accessory attachment as needed. In Mil. Std. 1913 Picatinny rail dimensions, they are machined from durable Mil. Spec. Type III anodized 6061 T6 aluminum, and include hex head mounting screws. Made in the U.S.A.