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Buy Sig Sauer SIGM400 Online 


The TREAD branded accessories include:

– M-LOK handguard with lightening cuts to reduce weight, available in 13” and 15” lengths;

– 3 chamber compensator;  Sig Sauer SIGM400 For Sale

– Ambidextrous charging handle made of aircraft grade aluminum and a dual roll pin design;

– ROMEO5 optic featuring a 2MOA dot with ten illumination settings, MOTAC, and 50k battery life;

– Flip-up front and rear iron sights that are easy to install, adjustable, and deploy quickly;

– M-LOK front sight adapter with co-witness height made of lightweight aluminum;

– Multiple configurations of M-LOK grip kits made of high strength polymer;

– Factory upgraded flat blade, single stage trigger.

Specification of Sig Sauer SIGM400 


16 in (406 mm)
5.56 NATO
7.5 in (191 mm)
30.8 in [782 mm]
2.5 in [64 mm]
7 lbs (3.2 kg)


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