Sig Sauer MCX .300 BLK 9in SBR .300 Blackout Black NFA Long Gun
Specifications
Action Single Action
Finish Black
Capacity 30+1
Grip Safety No
Optic Ready Yes
Barrel Length 9 inches
Caliber / Gauge .300 Blackout
Manual Safety Yes
Trigger Safety No
Threaded Barrel Yes
WARNING: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to WWW.P65WARNINGS.CA.GOV
Description
Product Overview
Built on SIG Sauer’s MCX platform, this .300 Blackout SBR pairs a 9-inch barrel with the MCX semi-automatic operating system for compact, suppressor-friendly use. With a threaded barrel and an optic-ready rail system, it’s designed to integrate cleanly with modern accessories while remaining compliant through NFA requirements.
Key Features
- .300 BLK configuration with a 9-inch SBR-length barrel
- Gas-operated semi-automatic MCX platform
- Threaded barrel (5/8x24) for standard .30 caliber muzzle devices
- Manual safety selector for straightforward operation
- Optic-ready rail layout for optics integration
For NFA buyers, this MCX SBR is a compact .300 BLK option engineered to run suppressed and support modern optics and accessories.
5.0 | 1 Reviews
- SKU:
- WRMCX-300B-9B-TFSAL-SBR
- UPC:
- 798681525768
- BUDS ID:
- 722030848
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NFA Item Notice
This item is regulated under the National Firearms Act (NFA) of 1934.
Please verify your local and state laws before purchasing. Learn more about NFA purchases.
Compatible Ammo
Customer Reviews
5.0 out of 5
1 total reviews
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Latest Reviews
Thomas F.
7 years ago
Verified Purchaser
Love this SBR.\\r\ I...
Love this SBR.\\r\ I was in ATFE limbo for a year but what a joy to finally shoot.\\r\ Pros:Love the gas piston. Love the adjustable gas block. Love the BUIS. Great balance.\\r\ Cons: I don't know how to say this politely, SIG builds a great weapon and then puts a horrible trigger in it. I own two SIG assault rifles and both triggers were >9lbs of pull out of the box. Unacceptable. Also be warned that MILSPEC triggers are NOT compatible with this. \\r\ \\r\ If you are going to put an aftermarket trigger in this gun (and you will) be sure to check that it is compatible. I would recommend sticking with Geiselle and not all of their drop-ins are compatible either.\\r\ Can be a pricey adventure once you are done outfitting this, but I have no regrets.
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Retail Availability
Bud's Gun Shop - Lexington, KY
1105 Industry Road, Lexington, KY 40505
Bud's Gun Shop - Sevierville, TN
2270 Two Rivers Blvd, Sevierville, TN 37876
Uncle Lee's - Greenville, KY
820 Main St, Greenville, KY 42345
