SIG Sauer unveiled the M400-FORGE at the 2026 NRA Annual Meetings in Houston last week, and the rifle is now shipping to dealers nationwide at $999 MSRP — a fully loaded AR-15 that arrives from the factory with a TriggerTech two-stage trigger and a Romeo MSR Gen II red dot already in the box. SIG Sauer announced the M400-FORGE in three configurations: a 16-inch rifle, an 11.5-inch pistol at $1,099, and an 11.5-inch SBR.

The centerpiece of the M400-FORGE is its barrel. SIG built it from a cold hammer forged 5.56 NATO blank produced on the same machinery the company uses for the MCX platform — a manufacturing standard that typically appears on rifles costing significantly more. Cold hammer forging compresses the barrel's grain structure, yielding tighter bore tolerances and longer service life compared to the button-rifled alternatives that dominate the sub-$1,000 segment. The 16-inch model runs a mid-length direct impingement gas system; the 11.5-inch variants use carbine-length gas.

The factory trigger is where the M400-FORGE makes its most direct pitch to the experienced shooter. The TriggerTech duty trigger breaks at a crisp 3.5 pounds on a flat two-stage blade — the same kind of upgrade that typically runs $180 to $220 at the counter after the sale. Paired with it at no extra charge is the Romeo MSR Gen II: a 2 MOA red dot with a 35,000-hour battery life on a single CR2032, 12 illumination settings including two compatible with night-vision devices, and IPX7 waterproofing. The Firearm Blog covered the rifle's Houston debut, noting the complete out-of-box approach as SIG's defining pitch for the new model.

The supporting hardware rounds out a well-specified package: a Breek Warhammer ambidextrous charging handle, a full-length free-floating M-LOK handguard, and a Magpul SL-K six-position adjustable stock. Four finishes ship at launch — black anodized at the $999 base price, plus Flat Dark Earth, Concrete Gray, and Moss Green Cerakote at a modest premium. The pistol configuration weighs 6.2 pounds unloaded; the rifle comes in at 6.8 pounds. Guns America notes that assembling a comparable aftermarket parts list from scratch would typically run several hundred dollars above the M400-FORGE's street price.

The M400-FORGE enters the sub-$1,000 AR segment with significantly more out-of-box capability than most of its direct competitors, which still ship with mil-spec fire control and no optic included. SIG is positioning the rifle for buyers who want a competition-ready platform from day one rather than a base build to outfit over time. Availability in Cerakote finishes may lag initial black-anodized stock as dealer pipelines fill through May; the SBR variant is available for buyers in states permitting NFA items.