| Brand | Sig Sauer |
| SKU | — |
| UPC | — |
| Action | Double Action |
| Finish | Black |
| Sights | Standard Sights |
| Capacity | 30 |
| Optic Ready | Yes |
| Barrel Length | 5.5 inches |
| Manual Safety | Yes |
| Caliber / Gauge | .300 Blackout |
| Threaded Barrel | Yes |
| Condition | New |
Sig Sauer
SIG Sauer RMCX Rattler .300 Blackout Black Semi-Automatic Rifle
★ — (0 reviews)
Out of Stock
See Price in Cart
Firearms ship to the FFL dealer you name at checkout. Price and stock are re-checked live when you order.
The SIG Sauer RMCX Rattler SBR is a compact .300 Blackout semi-automatic rifle built on the MCX platform, featuring a 5.5-inch barrel and a suppressor-compatible threaded muzzle. It’s configured to run optics with the factory rail system while still retaining backup iron sights for close-quarters use.
Key features
- 5.5-inch .300 Blackout barrel in an SBR configuration
- Optic-ready rail system with factory backup iron sights
- 1/2x28 threaded muzzle for suppressor and muzzle device compatibility
- 30-round magazine capacity
A compact .300 Blackout setup from SIG Sauer that’s ready for optics and built for fast handling.
Related products
Shop all →In stock
Sig Sauer
★ 5.0 (73)
$16.66
Box Quantity: 20 | Bullet Type: Hollow Point | Bullet Weight: 115.0
In stock
Sig Sauer
★ 4.9 (59)
$1379.99
Capacity: 15 | Barrel Length: 4.4
In stock
Sig Sauer
★ 5.0 (57)
$20.11
Box Quantity: 20 | Bullet Type: Hollow Point | Bullet Weight: 124.0
In stock