Click to expand Tap to zoom Avengers B-18 AK-74U Rear Sight Rail Insert by Avengers Save Liquid error (snippets/product-badge line 32): Computation results in '-Infinity'% $29.99 SKU 5KU-275-BK 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Features High durability aluminum alloy construction Mounts to rear sight block to add space for attachment of optics or other accessories Adds minimal bulk to your rifle