When to replace a BUIS set

View FBUIS-B on Amazon

Replace when detents fail, clamps crush, apertures crack, or zero will not hold after mechanical fixes. Lifetime guarantee claims on the FBUIS-B listing are handled per seller policy—confirm on Amazon.

• Model FBUIS-B · aircraft-grade aluminum matched front & rear flip-up pair
• Picatinny mount · hex screwdriver included
• Spring-loaded · dual rear apertures · windage/elevation dials
• Listed set weight 3.84 oz · ASIN B01AISP1KW · UPC 784672554763
• Seller Ozark Mountain Supplies (FBA) · lifetime guarantee noted on listing

Buy Ozark Armament Flip Up Iron Sights (FBUIS-B) on Amazon

Specs from the public Amazon listing for ASIN B01AISP1KW only. No false claims.