TruGlo TG-131MP Fiber-Optic 3-Dot Set Red Front, Green Rear with Nitride Fortress Finished Frame for S&W M&P, M&P Shield Including 22, 9/40 SD (Except 22 Compact, CORE, SD VE) $59.79
Troy Ind SSIGFBSFMBT00 BattleSight Front Sight Folding Black Black Hardcoat Anodized for M4, M16 $108.74