Product Overview
- Short-barreled rifle (SBR) chambered in .300 AAC Blackout with a 6-inch barrel.
- Short-stroke gas piston operating system on the MCX Rattler platform; folding stock and ambidextrous safety.
- 30+1 round capacity; aluminum receiver in black finish.
- Must ship to a Federal Firearms License (FFL) holder.
Overview
The SIG SAUER MCX Rattler SBR is a .300 AAC Blackout short-barreled rifle built on the MCX Rattler platform. The 6-inch barrel with a 1:7 twist rate operates via a short-stroke gas piston system. The aluminum receiver pairs with a folding stock for a compact overall package, and an ambidextrous safety selector is standard. Capacity is 30+1 rounds.
Key Features
- Caliber: .300 AAC Blackout — a cartridge well-suited to short-barreled configurations, including suppressed use.
- 6-inch barrel with 1:7 twist — very compact Rattler configuration.
- Short-stroke gas piston operation — reduces carbon fouling in the receiver area.
- Folding stock — significantly reduces the overall length of the platform when folded.
- Ambidextrous safety selector — usable from either side of the receiver.
- Aluminum receiver in black finish — standard MCX Rattler construction.
- 30+1 round capacity — accepts standard MCX-pattern .300 Blackout magazines.
FFL & Compliance
This short-barreled rifle is an NFA-regulated item and must ship to a Federal Firearms License (FFL) holder. Buyers are responsible for understanding and complying with all applicable local, state, and federal laws, including NFA transfer requirements. Magnum Ballistics does not provide legal advice or determine individual eligibility. We ship only to the FFL dealer selected during checkout.
