Sig Sauer RM400 Tread 5.56 16" AR-15 RM400-16B-TRD New MLOK Optic Ready


New in box Sig Sauer RM400 AR-15 in 5.56 with 16" barrel! Comes factory new in box with 20 or 30rd Mag, Manual, and lock!

The TREAD is an aluminum frame rifle, that is optics ready, TREAD features a 16 stainless steel barrel with a free-floating M-LOK hand-guard, a single-stage polished hard-coat trigger, ambidextrous controls, a Magpul SL-K 6 position telescoping stock and a mid-length gas system.

Please allow 1-3 business days for items to ship once payment and FFL are received.

FFL's can be emailed, or mailed to us. Please reference your name and the item number to prevent any delays in shipping.

Long guns and accessories ship UPS Ground. Handguns are shipped USPS priority mail.

Once payment and FFL are received we will email you a tracking/delivery confirmation number.


Serial numbers will vary.