SIG Sauer MCX Rattler
Sig Sauer MCX Rattler .300 AAC Blackout 5.5in 30rd Black Pistol
The Sig Sauer MCX Rattler is a compact MCX-family pistol chambered in .300 AAC Blackout with a 5.5in barrel. This Rattler pistol configuration ships with a 30-round magazine and an aluminum M-LOK handguard.
Factory features include a short-stroke gas piston operating system with a multi-position adjustable gas block, flip-up iron sights, an ambidextrous charging handle and controls, and an integrated 3-prong flash hider. This SKU is listed as the NB (No Brace) Rattler pistol configuration.

Specifications
| UPC | 798681673179 |
|---|---|
| Brand | SIG Sauer |
| Model | MCX Rattler |
| Model Number | PMCX-300B-5B-TAP-NB |
| Caliber | .300 AAC Blackout |
| Series | NB (No Brace) |
| Mfg Part Number | PMCX-300B-5B-TAP-NB |
| NFA Thread Pattern | 5/8x24 |
| Capacity Standard | 30 + 1 |
| Barrel Length | 5.5in in |
| Capacity | 30rd |
| Year Introduced | 2077 |
| Overall Length | 15.4" |
| Sights | Flip-up iron sights |
| Frame | Aluminum |
| Finish | Black |
| Weight | 5.6 lb (2.5 kg) lbs |
| Purpose 1 | Duty / Professional Use |
| Purpose 2 | Personal Defense |
SIG Sauer is a prestigious firearms manufacturer known for its exceptional quality, precision engineering, and innovative designs. The company originated from a partnership between the Swiss company Schweizerische Industrie Gesellschaft (SIG) and the German firm J.P. Sauer & Sohn in 1985. This collaboration brought together Swiss precision and German engineering, creating firearms that quickly gained a reputation for reliability and excellence.
SIG Sauer's diverse product lineup includes pistols, rifles, and accessories that cater to a wide range of users, from military and law enforcement professionals to civilian enthusiasts. Notable models like the P320, P365, P226, and P938 have become synonymous with quality and performance. The P320, …
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