2 Piece Low Profile BUIS Front & Rear Back up Iron Metal Rifle Gun Sights - BLUE
Includes: Front and Rear Sight Aircraft-grade Aluminum T6160 Alloy Spring loaded Flip up / lock in place feature. Dual Rear aperture. Low profile BLUE Anodized Finish Mounts on Picatinny or Weaver rails Front sight ad
www.acidtactical.com
The above link takes you to a sight I recently found with some great prices on what looks to be well made rifle sights and other products. The aluminum ones are probably stronger than Magpul ones, please don't tell Magpul I said that though...