BCMA(R) PKMR (Polymer KeyMod(TM) Rail) Direct replacement handguard featuring simple "drop in" design. For mil-spec, M4 type AR15's with a carbine length gas system and mil-spec front sight base. Natural ergonomics, slim, comfortable and lightweight, (only 5.6 oz). Aggressively textured area for enhanced traction. Reinforced KeyMod interface for durable accessory support. Three, six-hole KeyMod mounting surfaces (10:30, 1:30, and 6:00). Aluminum heat shield reduces heat transfer to the handguard and shooters' hand. The PKMR will only fit a round carbine type handguard retaining cap. Patent Pending design. Made in the USA.