Description
SIG Sauer M400 TREAD V2 5.56 NATO CA Compliant Rifle, 16-Inch, 10-Round
The SIG M400 TREAD California is the 10-round CA configuration of SIG’s no-compromise TREAD V2: a 16 in. stainless barrel, mid-length gas, Matchlite Duo, and a TREAD-engraved M-LOK handguard.
TREAD V2 is SIG’s no-compromise AR. A 16 in. stainless barrel, mid-length gas, and a Matchlite Duo two-stage sit under a TREAD-engraved free-float M-LOK handguard. SIG built V2 from shooter feedback: more handguard, a cleaner trigger, Magpul’s SL-K stock. The lower is ambidextrous on the safety and magazine release, with QD cups on the receiver.
The stainless barrel is 1:8 twist with SIG’s 3-prong flash hider on a 1/2-28 tapered shoulder. Mid-length gas is the V2 default. Magpul’s SL-K stock is six-position. The rifle is 6.5 lb, 35.8 in. extended and 32.5 in. collapsed. Width is 2.6 in. Height is 7.1 in.
This California TREAD V2
This TREAD V2 ships with a 10-round magazine as a California configuration. Stainless 16 in. barrel, Matchlite Duo, TREAD-engraved handguard. A factory red dot is not installed. Confirm current CA roster, magazine rules, and furniture requirements with your FFL. This page does not invent a featureless layout.
What ships
A 10-round magazine is the listed capacity. This is a serialized 5.56 rifle and ships to a licensed FFL. See the SIG M400 collection.
Specifications and Included Items
- Model: RM40016BTRDV2CA
- Caliber: 5.56 NATO
- Barrel: 16 in. stainless steel, 1:8 twist
- Muzzle: SIG 3-prong flash hider
- Operating system: Mid-length direct impingement
- Trigger: SIG 2-stage Matchlite Duo, flat
- Finish: Black
- Magazine included: 10-round magazine
- Compliance: California-listed configuration; confirm current roster and local rules with your FFL
- Optic: Optics-ready; a factory red dot is not installed
- FFL: Rifle; ships to a licensed FFL dealer








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