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- FAB Defense FAB Defense FXFRBS Front/Rear Folding Back-Up Sights for AR-15/ M16/ M4 Low Profile Dual Aperture Rear Sight Black Polymer and Metal $91.00
- FAB Defense FAB Defense FXRBS Rear Back-Up Sight for AR-15/ M16/ M4 Dual Aperture Low Folded Profile Spring-Locked Deployment Black Polymer & Metal $49.99
- FAB Defense FAB Defense FXFBS Front Back-Up Sight for AR-15/ M16/ M4 Low Folded Profile Spring-Locked Deployment Black Polymer & Metal $35.27
- FAB Defense FAB Defense FXUSMG2 Uinversal Pistol Picatinny Scope Mount Black Anodized $57.69