Home / Accessory-Flash Hiders / AAC (Advanced Armament) BLACKOUT FH 51T 5.56MM 1/2×28 View cart “SureFire MUZZLE BRAKE QD 338LAP 5/8X24” has been added to your cart. Sale! AAC (Advanced Armament) BLACKOUT FH 51T 5.56MM 1/2×28$9999 $8229 Out of stock SKU: 64141 Category: Accessory-Flash Hiders Product ID: 43791 Description Description 51 Tooth QD Suppressor Mount Related products Sale! Yankee Hill Machine Company SHORT SRX FLASH HIDER 11/16-24 $8995 $8381 SureFire TRI-LUG QD M13.5X1LH RYDER MNT $6900 Yankee Hill Machine Company FLASH HIDER PHANT 5.56 SMOOTH $3695 Yankee Hill Machine Company FLASH HIDER PHANT 5.56 W/TEETH $3695