SIG M400 SDI 5.56 NATO 16" Rifle with ROMEO5 Optic
$1,749.99
1 in stock
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SIG M400 SDI platform rifle in 5.56 NATO with 16" barrel, free-floating handguard, vertical foregrip, ROMEO5 GENII red dot, and Foxtrot-MSR tactical light. Includes 30-round magazine.
FFL
1
SIG M400 SDI: A Modern Tactical Rifle Ready for Action
The M400 SDI represents SIG SAUER's commitment to delivering a complete, mission-ready rifle platform. This 5.56 NATO carbine arrives fully configured with professional-grade optics and illumination—no additional purchases required.
Key Features
Rifle Platform
- 16" barrel optimized for 5.56 NATO ammunition
- Free-floating handguard for improved accuracy
- Vertical foregrip for enhanced control across all shooting positions
- Telescoping stock for adjustable length of pull
- 30-round polymer magazine included
Optics: ROMEO5 GENII Red Dot
- 1x magnification with crisp 2 MOA dot for rapid target acquisition
- Motion-activated MOTAC technology extends battery life to 40,000+ hours
- IPX7 waterproof rating handles demanding conditions
- Fully multicoated lenses ensure clarity in any lighting environment
- Top-mounted illumination controls accessible to both left and right-handed shooters
Illumination: Foxtrot-MSR Tactical Light
- 1,250 lumens output with 33,000 candela intensity
- Effectively illuminates targets while maintaining situational awareness
- Ergonomic design prioritizes accessibility and ease of use
Accessories
- Three M-LOK rail covers for customization and protection
- Fully configured and ready to deploy from the box
This rifle delivers the reliability and performance SIG SAUER is known for, combined with the practical accessories modern shooters demand.
Features
- romeo5 gen ii compact sight
- foxtrot-msr full size
- 2-stage match trigger
Attributes
Action:
Semi-Automatic
Barrel Description:
Threaded
Barrel Length:
16"
Caliber:
.223 Remington
Caliber:
5.56x45mm NATO
Capacity:
30+1
Features:
N/A
Finish:
Black
Finish:
Black Anodized
Finish:
Black FNC Nitride
Grip Type:
Magpul MOE-SL Stock
Grips:
Magpul MOE-SL Stock
Included Accessories:
None
Magazine Type:
30rd Magazine
Metal Finish Group:
Blued/Black
Model:
M400 Sentry
Model Series:
SIG M400
Muzzle:
Flash Hider
Overall Length:
33.25" - 36.50"
Overall Length:
36.50"
Receiver Material:
Alloy Steel
Safety:
Ambidextrous
Safety:
ambidextrous selector switch
Sights:
None
Stock:
Magpul MOE SL 6-Position
Stock Description:
Magpul MOE SL
Stock Finish Group:
Black
Thread Pattern:
1/2"-28
Trigger:
Two Stage Matchlite Duo
Twist Rate:
1:7
Weight:
8 lbs
