SIG Sauer M400 B5 Fixed Stock 5.56 NATO Black Rifle
Caliber: 5.56 NATO, .223 Remington · Capacity: 10+1
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Specifications
Action Semi-Automatic
Finish Black
Sights Standard Sights
Weight 7.5 pounds
Capacity 10+1
Grip Safety No
Optic Ready Yes
Barrel Length 16 inches
Manual Safety Yes
Overall Length 32.5 inches
Trigger Safety No
Caliber / Gauge 5.56 NATO, .223 Remington
Threaded Barrel Yes
Magazines Included 1
Ambidextrous Safety No
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 B5 is a semi-automatic rifle chambered for 5.56 NATO and compatible with .223 Remington ammunition. It combines a 16-inch threaded barrel with a direct-impingement operating system, a KeyMod handguard, a mil-spec trigger, and a fixed B5 stock. This New York, New Jersey, and Massachusetts compliant configuration includes a 10-round magazine.
Key Features
- 5.56 NATO chambering supports both 5.56 NATO and .223 Remington ammunition
- 16-inch threaded barrel provides a practical balance of handling and ballistic performance
- Direct-impingement semi-automatic action with a mil-spec single-stage trigger
- KeyMod handguard and optics-compatible top rail support accessory and sight configuration
- Fixed B5 stock offers a stable shoulder position and compliant configuration
- Includes one 10-round magazine
The SIG Sauer M400 B5 delivers dependable AR-pattern performance in a fixed-stock configuration suited to range use, training, and compliant ownership.
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- SKU:
- RM40016BC10S
- UPC:
- 798681461097
- BUDS ID:
- 3411
Compatible Ammo
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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
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| Action | Semi-Automatic | Semi-Automatic | Semi-Automatic | Semi-Automatic | Semi-Automatic |
| Barrel Length (in.) | 16.0 | 16.0 | 16.0 | 16.0 | 20.0 |
| Caliber / Gauge | .223 Remington, 5.56 NATO | .223 Remington, 5.56 NATO | .223 Remington, 5.56 NATO | .223 Remington, 5.56 NATO | .223 Remington, 5.56 NATO |
| Capacity | 10 | 10 | 10 | 30 | 30 |
| Finish | Black | Black | Black | Black | Blue/Black |
| Manual Safety | Yes | Yes | Yes | Yes | Yes |
| Overall Length (in.) | 32.5 | 32.5 | 32.5 | 33.0 | 39.5 |
| Weight (lbs) | 7.5 | 6.5 | 6.5 | 6.5 | 7.7 |
| Optic Ready | Yes | Yes | Yes | Yes | No |
| Threaded Barrel | Yes | Yes | Yes | Yes | No |
| Sights | Standard Sights | N/A | N/A | Standard Sights | Standard Sights |
| Actions | Current Item |
