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Sig Sauer RM40016BTRDCA: The M400 Tread is easily customizable with a full line of purpose-built accessories, designed and built in the USA. The Tread is an aluminum frame rifle, that is optics ready, Tread features a 16 stainless steel barrel with a free-floating M-LOK handguard, a single-stage polished hard-coat trigger, ambidextrous controls, a Magpul fixed stock and a mid-length gas system. This model is California compliant.
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