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SIG SAUER M400 FORGE 5.56 RIFLE 16.5″ BBL, BLACK, ROMEO MSR G2, TELESTOCK 1-30RD MAG
SIG SAUER M400 FORGE 5.56 RIFLE 16.5″ BBL, BLACK, ROMEO MSR G2, TELESTOCK 1-30RD MAG
$999.99
16 in stock
Disclaimer: It is the customer’s responsibility to ensure that all orders comply with applicable local and federal regulations. Non-compliant orders are subject to a 30% restocking fee. We reserve the right to dispute any chargebacks related to such orders.
Overview
The SIGM400 5.56 NATO rifle combines a 16 in barrel platform with a modern Romeo-MSR Gen II optic setup, a telescoping stock, and an AL M-LOK handguard to deliver a compact, ready-to-mount configuration for precision aiming and fast target acquisition.
Key Features
- Caliber: 5.56 NATO
- Action: Semi-automatic
- Barrel length: 16 in
- Finish/color: Black
- Optics compatibility: Romeo-MSR Gen II
- Stock: Telescoping
- Handguard system: AL M-LOK HG
- Magazine included: (1) 30 rd mag
Specifications
- Product name: SIGM400
- Firearm type: Rifle
- Barrel profile/length designation: 16IN
- Upper/forging designation: FORGE
- Model designation: ROMEO-MSR GEN II
- Accessory designation: TELE STOCK
- Handguard designation: AL MLOK HG
- Magazine capacity: 30 rounds
Benefits
- Integrated optic-ready configuration: Supports a Romeo-MSR Gen II mounting arrangement for an established sighting system.
- Compact 16 in form factor: Optimized proportions for maneuvering while maintaining a rifle-length barrel.
- Telescoping stock: Provides adjustable length-of-pull for consistent shoulder fit.
- M-LOK handguard interface: Enables mounting of compatible accessories along the handguard for organized setup.
Use Cases
- Range sessions requiring a 5.56 NATO semi-automatic rifle with a 16 in barrel
- Training that benefits from a telescoping stock and an optic-mounted layout
- Target work using a 30 rd magazine for extended strings
Why Choose SIGM400
The SIGM400 is specified with a 16 in 5.56 NATO semi-automatic rifle build, a Romeo-MSR Gen II optic configuration, an adjustable telescoping stock, and an AL M-LOK handguard, packaged with a 30 rd magazine in a black finish for a cohesive, assembled configuration.
Your Trusted Online Firearms Store – Shop with Confidence!
Looking for the best prices on SIG SAUER M400 FORGE 5.56 RIFLE 16.5″ BBL, BLACK, ROMEO MSR G2, TELESTOCK 1-30RD MAG by Sig Sauer? ADA Armaments LLC proudly serves Boise with unbeatable pricing, expert service, and exclusive rewards.
Best Prices in Boise.
Earn Rewards on Every Purchase.
Special Bundles & Firearm Packages Available.
Safe & Secure Checkout – Shop with confidence using trusted payment options.
Compliance-Ready – All sales follow federal, state, and local firearm laws.
No shipping to California.
Limited Stock – Visit Us Today or Shop Online Before They’re Gone!Â
| UPC | 798681744114 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | RM400556N16BFORGE |
| Action | Semi-Auto |
| Barrel Length | 16" |
| Caliber/Gauge | .223 REM/5.56 NATO |
| Capacity | 30 |
| Model | M400 Forge |
| Product Type | AR |
| Rate of Twist | 1:7" |
| Shipping Weight | 9.4 |
Overview
The SIGM400 5.56 NATO rifle combines a 16 in barrel platform with a modern Romeo-MSR Gen II optic setup, a telescoping stock, and an AL M-LOK handguard to deliver a compact, ready-to-mount configuration for precision aiming and fast target acquisition.
Key Features
- Caliber: 5.56 NATO
- Action: Semi-automatic
- Barrel length: 16 in
- Finish/color: Black
- Optics compatibility: Romeo-MSR Gen II
- Stock: Telescoping
- Handguard system: AL M-LOK HG
- Magazine included: (1) 30 rd mag
Specifications
- Product name: SIGM400
- Firearm type: Rifle
- Barrel profile/length designation: 16IN
- Upper/forging designation: FORGE
- Model designation: ROMEO-MSR GEN II
- Accessory designation: TELE STOCK
- Handguard designation: AL MLOK HG
- Magazine capacity: 30 rounds
Benefits
- Integrated optic-ready configuration: Supports a Romeo-MSR Gen II mounting arrangement for an established sighting system.
- Compact 16 in form factor: Optimized proportions for maneuvering while maintaining a rifle-length barrel.
- Telescoping stock: Provides adjustable length-of-pull for consistent shoulder fit.
- M-LOK handguard interface: Enables mounting of compatible accessories along the handguard for organized setup.
Use Cases
- Range sessions requiring a 5.56 NATO semi-automatic rifle with a 16 in barrel
- Training that benefits from a telescoping stock and an optic-mounted layout
- Target work using a 30 rd magazine for extended strings
Why Choose SIGM400
The SIGM400 is specified with a 16 in 5.56 NATO semi-automatic rifle build, a Romeo-MSR Gen II optic configuration, an adjustable telescoping stock, and an AL M-LOK handguard, packaged with a 30 rd magazine in a black finish for a cohesive, assembled configuration.
Your Trusted Online Firearms Store – Shop with Confidence!
Looking for the best prices on SIG SAUER M400 FORGE 5.56 RIFLE 16.5″ BBL, BLACK, ROMEO MSR G2, TELESTOCK 1-30RD MAG by Sig Sauer? ADA Armaments LLC proudly serves Boise with unbeatable pricing, expert service, and exclusive rewards.
Best Prices in Boise.
Earn Rewards on Every Purchase.
Special Bundles & Firearm Packages Available.
Safe & Secure Checkout – Shop with confidence using trusted payment options.
Compliance-Ready – All sales follow federal, state, and local firearm laws.
No shipping to California.
Limited Stock – Visit Us Today or Shop Online Before They’re Gone!Â
| UPC | 798681744114 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | RM400556N16BFORGE |
| Action | Semi-Auto |
| Barrel Length | 16" |
| Caliber/Gauge | .223 REM/5.56 NATO |
| Capacity | 30 |
| Model | M400 Forge |
| Product Type | AR |
| Rate of Twist | 1:7" |
| Shipping Weight | 9.4 |









