Product Overview
- Semi-automatic AR-15 style rifle chambered in 5.56 NATO with a 16" free-floating barrel.
- Sig Flat Match Grade trigger and 15" M-LOK handguard; Magpul SL-K 6-position telescoping stock.
- Direct impingement gas system; 7075 T-6 aluminum receiver with black hardcoat anodized finish.
- Must ship to a Federal Firearms License (FFL) holder.
Overview
The Sig Sauer M400 X-Series in 5.56 NATO is a semi-automatic AR-15 style rifle with a 16" chrome moly steel, FNC-coated, free-floating barrel and 30+1 capacity. The 7075 T-6 aluminum receiver wears a black hardcoat anodized finish. Overall length is 35.5" and the rifle weighs 6.3 lbs. A direct impingement gas system drives the action.
Standard features include a 15" M-LOK free-floating handguard, Magpul SL-K 6-position telescoping stock, Sig Flat Match Grade trigger, and a black polymer pistol grip. No sights are included from the factory.
Key Features
- 16" chrome moly steel, FNC-coated, free-floating barrel in 5.56 NATO with 30+1 capacity.
- Sig Flat Match Grade trigger for a consistent, competition-style pull.
- 15" M-LOK free-floating handguard for accessory attachment and barrel cooling clearance.
- Magpul SL-K 6-position telescoping stock for adjustable length of pull.
- 7075 T-6 aluminum receiver with black hardcoat anodized finish for durability.
- Direct impingement gas system.
- No sights included; rail-ready upper for optic mounting.
FFL & Compliance
This firearm must ship to a Federal Firearms License (FFL) holder. The buyer is responsible for knowing and complying with all applicable local, state, and federal laws prior to purchase. Magnum Ballistics does not provide legal advice or determine purchase eligibility. We ship only to the FFL dealer selected during checkout.
