SIG SAUER M400 X-SERIES SDI 5.56 NATO 30RD
SIG SAUER M400 X-SERIES SDI 5.56 rifle with ambidextrous controls, M-LOK handguard, Matchlite Duo trigger, and modern AR-style performance.
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Description
SIG SAUER M400 X-SERIES SDI Features
SIG SAUER M400 X-SERIES SDI is a semi-automatic rifle built for shooters who want a more refined AR-platform carbine with fully ambidextrous controls and modern factory upgrades. It fits range use, training, and general-purpose shooting where familiar handling and dependable performance matter. Because it uses a direct impingement system, it keeps the operating style simple and widely familiar for AR users.
The SIG SAUER M400 X-SERIES SDI also brings meaningful factory enhancements that set it apart from a more basic carbine. Its free-floating M-LOK handguard uses a steel lockup design to help reduce deflection, while the 2-Stage Matchlite Duo trigger gives the rifle a more precise feel. In addition, the rifle uses a 16-inch barrel with a 1:7 twist, a mid-length gas system, and a fully ambidextrous lower with controls designed for both left- and right-handed shooters. The package also includes one 30-round magazine, and the overall layout supports practical accessory use without losing the familiar feel of the AR platform. As a result, it stands out for buyers who want a factory-built 5.56 rifle with upgraded controls and a stronger out-of-the-box feature set.
Specifications
Manufacturer: SIG SAUER
Model: M400 X-SERIES SDI
Operating System: Direct Impingement
Platform: AR-15 Pattern
Handguard Type: Free-Floating M-LOK Handguard
Trigger Type: 2-Stage Matchlite Duo Trigger
Gas System: Mid-Length
Barrel Material: Chrome Moly Steel
Additional Notable Specs: Fully ambidextrous controls, steel handguard lockup design, 1:7 twist, includes 1 magazine
Specifications
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