Strike Industries' Strike Rail is a lightweight, but feature-packed rail that you can depend on when entering harm's way. Its 1.57" internal diameter is for a suppressor or Oppressor compatibility. The rail is M-Lok compatible, has a built-in anti-rotation feature in the rail, ambidextrous QD socket placement, and reinforced steel mounting nut and bolt. It is not compatible with most gas piston systems.
Specifications:

Type	Railed Handguard
Firearm Type	Rifle
Firearm Model	AR-15
Material	Aluminum
Finish	Blue Hard Coat Anodized
Features	M-LOK
Adjustment Type
Positions
Length of Pull
Rails	2
Texture Type
Swivel Studs
Free Floating
Grip Type
Tube Included
Max Capacity