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Quick Look
The Sig Sauer SIGM400 SBR is a compact short-barreled rifle introduced to provide enhanced maneuverability without sacrificing reliability. Designed for tactical versatility, it offers high performance in close-quarters engagements. It remains popular among law enforcement and civilian enthusiasts seeking a robust SBR option.
Why It's a Top Choice
- Reliable AR-style piston-driven system
- Short barrel for enhanced maneuverability
- Free-floating M-LOK handguard for customization
- Ambidextrous controls for all users
- Compatible with a wide range of optics
Key Variants
SIGM400 SBR 11.5
Ideal for users needing a compact 11.5-inch barrel with balanced performance for tactical use.
SIGM400 SBR 10.5
Designed for maximum close-quarters maneuverability with a lightweight 10.5-inch barrel.
SIGM400 SBR 14.5
A longer SBR variant offering increased velocity and accuracy for varied engagements.
Competitor Comparison Table
| Feature | SIGM400 SBR | Daniel Defense DDM4 | Colt LE6920 |
|---|---|---|---|
| MSRP | $1,600 - $2,000 | $1,800 - $2,200 | $1,200 - $1,500 |
| Capacity/Size | 30 rounds / Short Barrel | 30 rounds / Short Barrel | 30 rounds / Standard SBR |
| Weight | 7.5 lbs | 6.9 lbs | 6.9 lbs |
| Optics-Ready | Yes, Picatinny Rail | Yes, Picatinny Rail | Yes, Picatinny Rail |
| Trigger Type | Two-Stage Trigger | Enhanced Mil-Spec | Mil-Spec Standard |
| Notable Pro | Piston system reduces fouling | Lightweight and durable | Trusted military heritage |
| Notable Con | Heavier than direct impingement ARs | Higher price point | Less modern features |
Best Use Cases
- Personal and home defense
- Law enforcement and tactical roles
- Competition shooting
- Range practice and training
- Compact hunting setups
FAQs
Can I use standard AR-15 magazines with the SIGM400 SBR?
Yes, the SIGM400 SBR uses standard AR-15 magazines compatible up to 30 rounds.
What is the barrel length range for the SIGM400 SBR variants?
Barrel lengths vary from 10.5 to 14.5 inches depending on the specific SBR variant.
How does the piston system benefit the SIGM400 SBR?
The piston system reduces carbon fouling and enhances reliability in adverse conditions.
