Home / Accessory-Flash Hiders / AAC (Advanced Armament) BLACKOUT FH 51T 5.56MM 1/2×28 View cart “Yankee Hill Machine Company FLASH HIDER PHANT 5.56 W/TEETH” 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! SureFire MUZZLE BRAKE QD 338LAP 5/8X24 $19900 $18427 Sale! SureFire WARDEN BLAST RGLTR MULTI BLACK $25000 $22862 Sale! SureFire WARDEN BLAST RGLTR MULTI DE $25000 $22862 SureFire TRI-LUG QD M13.5X1LH RYDER MNT $6900