Cross Machine Tool HDM ARCA Swiss Style Rail 17 Inch Free Float AR Handguard

This rail system is meant not only to give you tons of picatinny rail surfaces, but also to make it possible to mount ARCA/Swiss tripod and bipod systems to your AR-style rifle. The overall shape of the rail has also been enhanced to make it easier to shoot from a rest or bag, meaning that this is a great choice for those looking to get maximum potential accuracy out of their rifles. Features Rail- 6000 series extruded Aluminum Milspec Type 3 Class 2 Hard Black anodized Barrel Nut- 7075 Aluminum Type 3 Class 2 Hard Anodized 17-4PH Cored Stainless Steel Rail mounting attachment- Patented Times to the upper receiver to prevent twisting. ARCA swiss profile rail integrated into handguard at the 6 o'clock position Free floating, shim-free installation MLOK Slots at the 1/3/6/9/11 o'clock positions Includes barrel nut wrench Barrel Nut diameter- 1.378" Compatible with most known low profile gas blocks Made & Assembled in the USA This high-quality aluminum rail is awesome for folks who are looking for lightweight, durable solutions to mounting accessories to their AR in a way that will maintain zero if mounted correctly, and who want to mount compatible bipods.