The store will not work correctly in the case when cookies are disabled.
*WASHINGTON STATE RESIDENTS ONLY* LAST CALL - All MAGAZINES and IN-STORE firearms orders with Magazines over 10 rounds must be place by 11:59pm PST, June 28th, 2022
While Rainier Arms tries to stay current on all state laws, it is the responsibility of the customer to ensure that the firearm they are purchasing is legal to ship, as presented on our website, to their dealer of choice, and that the dealer is willing to accept the transfer.
FFL Required Before Shipping. Please have your dealer email a copy of their FFL to [email protected] or fax it to 253-218-2998, referencing your name and order number.
The M400 TREAD is an optics ready, aluminum frame rifle. 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™ SL-K 6 position telescoping stock, a mid-length gas system, and is available in 5.56 NATO.
The TREAD branded accessories include:
M-LOK handguard with lightening cuts to reduce weight
3 chamber compensator
Ambidextrous charging handle made of aircraft grade aluminum and a dual roll pin design
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.