Sig Sauer
Sig Sauer SIGM400 SDI X Rifle 5.56mm 30rd Magazine(1) 16' Threaded Barrel M-LOK Handguard FDE Finish
Product Details
Features:
- CALIBER: 5.56 NATO
- SIGHTS: Optics Ready
- BARRELLENGTH: 16 in [406.4 mm]
- BARREL MATERIAL: Chrome / Moly Steel
- TWIST RATE: 1:07
- THREADS: 1/2 in - 28 tpi tapered shoulder
- MUZZLE DEVICE: SIG Flash Hider-Compensator
- ACTION TYPE: Semi-Auto
- OPERATING SYSTEM: Mid-Length Direct Impingement
- STOCKTYPE: 6-Position Magpul MOE-SL Black
- GRIPTYPE: Reduced Angle
- TRIGGER TYPE: SIG 2-Stage Matchlite Duo
- TRIGGER SHAPE: Flat
- MANUAL SAFETY: Ambidextrous
- FORENDTYPE: M-LOK Moss Green Cerakote
- ACCESSORY RAIL: M-LOK/Picatinny
- MAG TYPE: AR-15
- MAGS INCLUDED: (1) 30rd Polymer Mag
- COLOR: Moss Green Cerakote
- RECEIVER FINISH: FDE Cerakote
- OVERALL LENGTH: 36.5 in
- COLLAPSED LENGTH: 33.25 in
- FOLDED LENGTH: N/A
- OVERALL WIDTH: 2.8 in
- HEIGHT: 7.1 in
- WEIGHT: 7 lbs
- FORWARD ASSIST: Yes
Specifications
| Brand | Sig Sauer |
|---|---|
| UPC | 798681714469 |
| Caliber | 5.56 NATO / .223 |
| Action | Semi-Auto |
| Color / Finish | Green |
| Barrel Length | 16" |
| Capacity | 30 rounds |
| Material | Steel |
| Weight | 9.72 lb |
| Condition | New |
Buying this item
- Can I buy the Sig Sauer SIGM400 SDI X Rifle 5.56mm 30rd Magazine(1) 16' Threaded Barrel M-LOK Handguard FDE Finish online and have it shipped to me?
- Firearms cannot ship to your home. Buy it here and pick it up at Iron Valor Armory in Rocky Mount, NC after a NICS background check, or have it shipped to a licensed FFL dealer near you for their transfer fee.
- How old do I have to be to buy the Sig Sauer SIGM400 SDI X Rifle 5.56mm 30rd Magazine(1) 16' Threaded Barrel M-LOK Handguard FDE Finish?
- You must be 18 or older with valid government ID for rifles and shotguns (21+ for handguns).
- Is the Sig Sauer SIGM400 SDI X Rifle 5.56mm 30rd Magazine(1) 16' Threaded Barrel M-LOK Handguard FDE Finish in stock?
- Yes — live distributor inventory shows it in stock and it ships or is ready for pickup within 1–3 business days.
- What is the return policy?
- Non-firearm items may be returned within 30 days (a restocking fee of up to 15% applies if the packaging was opened). Firearms and ammunition are final sale once transferred, per federal law.
All firearm sales require background checks and compliance with federal, state, and local laws. You must be 21+ for handguns/stripped receivers and 18+ for long guns.
Frequently bought together
Complete the setup
Ammo, magazines and optics matched to Sig Sauer SIGM400 SDI X Rifle 5.56mm 30rd Magazine(1) 16' Threaded Barrel M-LOK Handguard FDE Finish. Everything here ships to your door or is ready at pickup.
Adds the first item in each column · you can adjust in the cart
5.56 NATO / .223 ammunition
Same caliber as this firearm.
Magazines that fit
Matched by caliber and Sig Sauer fit.
Optics for this rifle
We mount and bore-sight for pickup.
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