SIG SAUER MCX Reduced Signature Assault Rifle (RSAR) Suppressed .300 Blackout (.300BLK) COTS Drop-On PDW-Type Upper Receiver for QUIET Military Special Operations Missions!

B David Crane
david (at) defensereview (dot) com

January 7, 2023

The Firearm Blog (TFB) has a nice video piee on the SIG MCX RSAR (Redued Signature Assault Rifle) suppressed .300 Blackout (.300BLK) commercial off-the-shelf (COTS) drop-on upper receiver that’s worth taking a look at. Basically the MCX RSAR allows military Special Operations Forces to go totally subsonic with a nice large and heavy round, and then switch right over to large, heavy supersonic rounds with 7.62x39mm Ruussian performance either with the same mag (magazine), or with a quick mag change…and then convert over 5.56x45mm NATO in minutes if needed, all the while using their standard-issue M4/M4A1 lower receiver. Pretty slick.

It’s really a no-brainer PDW-type weapon. Anyway, here’s the video on it:

Company Contact Info:

SIG SAUER, Inc.
72 Pease Boulevard
Newington, NH 03801
Phone: 603-610-3000
Fax: 603-610-3001
Email Contact Page: https://www.sigsauer.com/customer-service-contact/
Website: https://www.sigsauer.com

SIG SAUER Academy Pro Shop
233 Exeter Road
Epping, NH 03042p
Phone: 603-610-3456
Fax: 603-610-3401

SIG SAUER Academy
233 Exeter Road
Epping, NH 03042
Phone: 603-610-3400
Fax: 603-610-3401
Email: sigsaueracademy@sigsauer.com

© Copyright 2022 DefenseReview.com (DR). All rights reserved. This material may not be published, broadcast, rewritten or redistributed without receiving permission and providing proper credit and appropriate links. If you are reading this article anywhere other than DefenseReview.com, please email us the website address/URL (where the unauthorized DR article reprint is located) at defrev (at) gmail (dot) com. Thank you.

Related Articles:

SIG SAUER Custom Works P365XL SPECTRE and SIG P320 XCOMPACT SPECTRE Distressed, Striker-Fired 9mm Combat/Tactical Concealed Carry (CCW) Pistols are Lookin’ Pretty Slick

SIG SAUER P320 XSeries 9mm Pistols for Concealed Carry (CCW), Combat and Competition: Meet the P320 RXP XCompact, RXP XFull-Size, and XCarry TACOPS! (Video!)

SIG SAUER P365 XL ROMEOZERO Striker-Fired 9mm Combat/Tactical Pistol with Red Dot Sight Combat Optic: Ultimate Concealed Carry (CCW) Pistol Package? (Video!)

Smith & Wesson M&P Shield Plus High-Capacity Sub-Compact 9mm/.40 S&W Combat/Tactical Pstol for Covert Concealed Carry (CCW): Up to 13+1 Rounds!

Springfield Armory XD-M Elite 3.8″ Compact Optical Sight Pistol (OSP): Compact 9mm Combat/Tactical Pistol for Concealed Carry and Covert Ops!

SIG SAUER SL MAG .338 Norma Magnum (NM) Lightweight Belt-Fed Machine Gun with Recoil Attenuation/Mitigation System and Lase-and-Engage Technology Electro-Optical Combat Optic/Laser Sight! (Video!)

Grey Ghost Precision GGP Glock 17/19 and SIG SAUER P320 and P365 Drop-In 9mm Pistol Parts: Slides, Barrels and Triggers! (Video!)

SIG SAUER SIG P320 Carry (P320C) Nitron Striker-Fired Compact Combat/Tactical Pistol and SIG P320 Full-Size (P320F) Nitron Pistol at the Range!: Shooting Impressions (Video!)

SIG SAUER P320 Nitron Striker-Fired, Polymer-Frame Semi-Auto Combat/Tactical Pistol Series: Meet the SIG 320C (SIG 320 Carry/Compact) and SIG 320F (SIG 320 Full-Size) 9mm/.40 S&W/.357 SIG Pistols

SIG MPX Multi-Caliber Machine Pistol/Submachine Gun (SMG) and Suppressed SIG MPX SMG/PDW (Personal Defense Weapon) Fired on Full-Auto and Semi-Auto at SIG SAUER New Media Writers’ Event (Video!)

SIG MCX LVAW (Low-Visibility Assault Weapon) ‘Black Mamba’ Suppressed 300 Blackout (300BLK) Piston AR Assault SBR/PDW (Short Barreled Rifle/Personal Defense Weapon) Fired on Full-Auto and Semi-Auto with Subsonic and Supersonic Ammo During SIG SAUER New Media Writers’ Event (Video!)

SIG MCX LVAW ‘Black Mamba’ 300 Blackout (300BLK) Piston AR SBR/PDW Features Demo: Subsonic/Supersonic Ammo Adjustment, Slimline Folding Stock, Tactical Handguard/Rail Removal (Video!)