SIG Sauer M400 SDI XSeries .223 Remington 5.56 NATO FNC Rifle w/ ROMEO5 Gen II Compact Sight
Caliber: .223 Remington, 5.56 NATO · Capacity: 30+1
Specifications
Action Semi-Automatic
Finish FNC
Sights Red Dot Sights
Weight 8 pounds
Capacity 30+1
Grip Safety No
Optic Ready Yes
Barrel Length 16 inches
Manual Safety Yes
Overall Length 36.5 inches
Trigger Safety No
Caliber / Gauge .223 Remington, 5.56 NATO
Threaded Barrel Yes
Magazines Included 1
Ambidextrous Safety Yes
WARNING: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to WWW.P65WARNINGS.CA.GOV
Description
Product Overview
The SIG Sauer M400 SDI XSeries is a semi-automatic rifle chambered for .223 Remington and 5.56 NATO. It combines a 16-inch threaded barrel with a Magpul MOE-SL collapsible stock, a two-stage match trigger, and a 30+1-round capacity. This package includes a ROMEO5 Gen II Compact red dot sight, a FOXTROT-MSR full-size weapon light, and one 30-round magazine.
Key Features
- Chambered for .223 Remington and 5.56 NATO
- 16-inch barrel with a 1-in-7-inch twist rate
- Threaded muzzle with a 1/2x28 thread pattern
- Two-stage match trigger for a refined trigger pull
- Magpul MOE-SL collapsible stock for adjustable length of pull
- ROMEO5 Gen II Compact red dot sight included for rapid target acquisition
The SIG Sauer M400 SDI XSeries package delivers a versatile, ready-to-configure rifle with match-grade controls, an included red dot sight, and an integrated weapon light.
5.0 | 1 Reviews
Free and Fast Shipping to the Lower 48 States.
- SKU:
- RM400SDI16BR5FX
- UPC:
- 798681716128
- BUDS ID:
- 179055
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Latest Reviews
Michael C.
9 months ago
Verified Purchaser
Picked up the SIG...
Picked up the SIG SAUER M400 SDI XSeries 223 Rem | 5.56 NATO from Buds Gun Shop and I'm honestly impressed. The ordering process was super easy, and I got helpful updates every step of the way. The rifle showed up right on schedule and in perfect condition — zero issues. First time at the range, it ran flawlessly: accurate, lightweight, and feels solid in the hands. I appreciated that Buds had clear product info and straightforward checkout (plus a nice discount for members). No complaints at all about their customer service; quick replies and friendly staff. If you're looking for a reliable AR platform and a good buying experience, Buds Gun Shop made it stress-free and I'd shop here again.
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Retail Availability
Bud's Gun Shop - Lexington, KY
1105 Industry Road, Lexington, KY 40505
Bud's Gun Shop - Sevierville, TN
2270 Two Rivers Blvd, Sevierville, TN 37876
Uncle Lee's - Greenville, KY
820 Main St, Greenville, KY 42345
