Cross Machine Tool HDM ARCA Swiss Style Rail - 13"

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 USAThis 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.