Sig Sauer M400 Tread Coil 5.56mm NATO 16in Black Semi Automatic Modern Sporting Rifle – 10 1 Rounds – The TREAD COIL sets a new standard in performance and value in the AR category. With installed accessories including ROMEO5 Red Dot Sight, 2 Stage Match Trigger, and 13” lightweight handguard, the COIL is the perfect rifle package for the avid user or first-time buyer. Other features of the TREAD COIL include the precision 16” stainless barrel, ambidextrous controls, and 6-position Magpul SL Stock.

• 3 Chamber Compensator
• Ambidextrous charging handle made of aircraft grade aluminum and a dual roll pin design
• ROMEO5 optic featuring a 2MOA dot with ten illumination settings
• M-LOK front sight adapter with co-witness height made of lightweight aluminum
• Colorado Compliant