Outfitters Score™
Excellent
Sig Sauer, Inc. scores as a top-tier build with average pricing and a bare-bones configuration.
Our proprietary rating combines brand tier, price percentile within the caliber, feature completeness, barrel versatility, retailer availability, caliber practicality, and use-case fit.
Description
SIG SAUER's M400 XSeries has been developed with the input from the professional instructors at SIG SAUER Academy. Building upon their decades of experience and countless hours of instruction, we have developed the M400 XSeries to meet the highest standards of performance and reliability. With fully ambidextrous controls including a bolt catch/and release unique to the M400 SDI lower-receiver, the M400 XSeries delivers advanced performance for both left & right-handed shooters and makes transitional shooting easier than ever. The free-floating handguard utilizes a new steel lockup design that significantly reduces handguard deflection by providing maximum rigidity and allows for a Mfg: Sig Sauer, Inc.
Features
Free Float|Ambidextrous|Ambi
Full Specifications
Overview
| Brand | Sig Sauer, Inc. |
| Model | RM400-SDI-16B-MSGRN |
| SKU | 430113882 |
| Rifle Type | semi auto |
| Platform | AR15 |
| Caliber | 5.56 NATO |
| UPC | 798681701216 |
Gas System
| Operating System | direct-impingement |
Receiver
| Forward Assist | No |
| Dust Cover | No |
Handguard
| Free Float | Yes |
Muzzle
| Suppressor Ready | No |
Sights & Optics
| Optic Ready | No |
Dimensions & Weight
| Magazine Capacity | 30 rounds |
Compliance
| CA Compliant | No |
| Classification | Rifle |
| NFA Item | No |
What's Included (Complete Rifle)
This is a complete, ready-to-shoot firearm.
Upper Receiver
Lower Receiver
Barrel
Bolt Carrier Group
direct-impingement
Handguard
Free Float
Stock
Grip
Trigger
Muzzle Device
Charging Handle
Gas Block
Gas Tube
Buffer Tube
Backup Iron Sights
Optic
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Manufacturer · Tier 1
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Build Guide
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State Check
This rifle has NFA or magazine considerations →
Swiss-origin firearms giant. The M400 and MCX platforms compete in the premium space, and Sig won the US Army NGSW rifle contract with the XM7.
View brand profile →M400 Sdi Xseries 5.56x45 Nato Semi-Auto Rifle - M400 Sdi Xseries 5.56x45 Nato 16" Bbl (1)30rd Mag Moss Green
RM400-SDI-16B-MSGRN
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