Why you need Racing Optics XStack 10 Clear Laminated Tearoffs..
The XStack 10 is a stack of 10 laminated tearoffs that are 2 mil thick each. The laminated technology creates a distortion-free optical lens. Eack package contains 3 stacks of 10 tearoffs for a total of 30 tearoffs.
Post Center: 12 3/8"
Fits: Bell Vortex/ BR-1/ M4/ K-1/ Sport w/ 276, 281, 288 shield, Pyrotect