Description
Sig Sauer RM40016BTRD M400 Tread 5.56x45mm NATO 16″ 30+1 Black Hard Coat Anodized Black 6 Position Magpul SL-K Stock Black Polymer Grip
The M400 Tread features a free-floating M-LOK handguard, Magpul SL-K 6-position telescoping stock, single stage trigger, 16″ stainless steel barrel, and a 7075 T-6 aluminum receiver with a black hardcoat anodized finish.






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