Machined from hardened aircraft aluminum with stainless steel components and finished in MIL-SPEC hardcoat anodizing, the M-LOK rails are light and sleek. Easy to install and mount accessories. *Note- Barrel nut is not included.
Specifications:

Type	Quad Rail
Firearm Type	AR-15
Firearm Model	AR-15
Material	Aluminum
Finish	Black
Features	M-Lok
Adjustment Type
Positions
Length of Pull
Rails	4
Texture Type
Swivel Studs
Free Floating	Yes
Grip Type
Tube Included
Max Capacity