We have some barely used Sig flash hiders that came off three (3) Sig MCX Spear LT firearms. 

# 1 - Sig flash hider off a Sig MCX Spear in 7.62x39. Clutch-Lok Shouldered QD. 5/8x24 threads. 

# 2 - Sig flash hider off a Sig MCX Spear in 5.56mm. Clutch-Lok Shouldered QD. 1/2x28 threads. 

# 3 - Sig flash hider off a Sig MCX Spear in 5.56mm. Clutch-Lok Shouldered QD. 1/2x28 threads.