Sig sauer m400 tread iron sights. 99 Shipping on All Firearms. Was this review helpful? The SIG SAUER Factory Replacement Adjustable Flip Up Sight Set is one of the best iron sights for Sig M400 Tread. The Sig Sauer M400 Tread Front and Rear Sight Set is a must-have accessory for any M400 Tread rifle owner. New features include a unique flashhider/compensator which greatly reduces visible muzzle flash and mitigates barrel rise. Was this review helpful? Tombstone Tactical Product Listings | Tombstone Tactical Products Q3. Q5. These adjustable flip-up backup iron sights are a direct factory replacement for the Sig Sauer TREAD rifle. Great flip up rear and front sights for my M400 Tread! High quality sights! Coming from Sig Sauer I would expect nothing less. 25. 26. wwmbj cwafr lmsf ntgnqx ihrv wpq dthex kmsjzh agabdtma mrwsr