This is a firearm — here's how it works
- Order online. Pay in full; we ship it from our warehouse into the shop.
- We receive it. The firearm ships to us (or your chosen FFL) — never to your door.
- DROS & the 10-day wait. California background check and the mandatory 10-day waiting period begin at the counter.
- Pick up & transfer. Bring valid ID and required documents; we complete the compliant transfer.
Description
Sig Sauer RM400556N16BFORGECA M400 Forge *CA Compliant 5.56 NATO 10+1 16" Black Anodized Alloy Receiver w/Picatinny Rail, M-LOK Handguard, Magpul MOE Black Polymer Stock, Shark Fin Grip, Sig ROMEO MSR
Specifications
| Action | Semi-Auto |
|---|---|
| Caliber / Gauge | .223 REM/5.56 NATO |
| Capacity | 10 |
| Barrel length | 16" |
| Model | M400 |
| Color | Black |
| Sights | Optics Ready |
| Twist rate | 1:7" |
| Barrel finish | Black |
| Magazine included | 1 x 10-Round |
| Magazines included | 1 10 rd. |
California compliance
Every firearm sale runs through the standard California process: an in-person DROS background check, the mandatory 10-day waiting period, a valid Firearm Safety Certificate (FSC), and proof of California residency. The 11% AB 28 firearms excise tax is collected at checkout and shown as a separate, non-taxable line.
Sig Sauer RM400556N16BFORGECA M400 Forge *CA Compliant 5.56 NATO 10+1 16″ Black Anodized Alloy Receiver w/Picatinny Rail, M-LOK Handguard, Magpul MOE Black Polymer Stock, Shark Fin Grip, Sig ROMEO MSR
In stock at our warehouse — ready to ship
It's not in our Napa cases today, but it's in stock at our warehouse and ready to ship. You complete the purchase and pick it up at the counter, same as anything else — we text you when it lands.
This is a firearm: it transfers through a licensed dealer and never ships to your door. You'll choose our Napa counter or your own dealer at checkout.
