LMT Confined Space Weapon


LMT Confined Space Weapon


Lewis Machine & Tool welcomes the revolutionary Confined Space Weapon to its arsenal. LMT® built the CSW300 with its patented Monolithic Rail Platform, the only true monolithic rail platform, which is milled from a single high-grade aluminum forging. Two locking bolts on the side of the receiver lock the barrel extension in place. MRP technology engages the barrel extension for a full 360 degrees and allows the barrel to be removed in seconds while minimizing point of impact shift. One receiver can support numerous barrels of varying length, material, and caliber. The Confined Space Weapon measures 24″ collapsed and is ideal for close quarter combat operations. The weapon is rapidly growing in popularity with government and military groups around the world.

CSW300 Wide LM8 Upper Receiver | Ambidextrous Charging Handle |

S-A Bolt Carrier Group | MARS-L PDW Lower Receiver |

The CSW300 upper receiver is mid-length and designed to enclose its combined barrel and suppressor. The receiver has an 16.5-inch Picatinny top rail while the remaining sides have locating lugs and screw holes. The locating lugs reduce recoil of attached accessories while the screw holes hold the accessory or rail to the weapon. This system comes with a grip stop installed on the front end to reinforce safe hand placement.

The barrel uses LMT’s Virtual Baffle System technology in its integral suppressor. The VBS suppressor defeats its competitors in the following ways:

passes SOCOM’s SURG high-performance stress test
rated for automatic fire
minimizes cyclic rate increase
maintains a lower average surface temperature at one hundred rounds
minimizes point of impact shift.
Consequently, it is one of the most efficient and user-friendly suppressors on the market.

The MARS®-L ambidextrous lower receiver features our EDM machined two-stage trigger, winter trigger guard, endplate with QD swivel point, LMT® ergonomic textured grip, and shorty SOPMOD stock. The ambidextrous features include bolt catch and release, magazine catch, and safety selector. As with all LMT® lower receivers, the extension tube is coated with dry film lubricant.

This weapon system comes with grip stop, six grip panels, one magazine, and owner’s manual.



You must register to use the waitlist feature. Please login or create an account
SKU: CSW300S Categories: , ,


CWS300S Confined Space Weapon

Caliber .300 Blk
Operating Method Direct Impingement
Magazine Capacity 30 Rounds
Barrel 12″ Integrally Suppressed – Chrome
Rifling 1:7″
Trigger Single Stage
Color Black

LMT, Lewis Machine & Tool Company, has been in business for 40 years and providing top quality American made weapons to law enforcement, military, and government agencies, hunters, commercial retailers, and recreational practice. LMT produces a full line of accessories and weapons fabricated specifically for all types of environments from urban to desert combat. Their main business goal is to surpass the expectations of not only customer service but quality and price as well.

LMT has received many awards and accreditations like the Illinois Quad City Small Business Government Procurement Award for Excellence in State and Federal Government Procurement, United States Army Armament, Munitions and Chemical Command Award for Contractor Excellence of Loyal Support and Contributions to the Readiness of the Us Armed Forces (Oct., 1991-Sept. 1992), Us Army Material Command for Outstanding Achievement in Value Engineering (1994), and the Committee of Small Arms Producers (Apr. 1997-Feb. 2001)

The LMT Confined Space Weapon is among one of the most popular weapons for combat in small confined areas due to its 24” collapsed size and 16.5” Picatinny top rail. This firearm is beautiful and compact in all the right ways.

The barrel’s usage of LMT’s Virtual Baffle System makes the CSW300 makes it one of the most efficient suppressors on the market today. Our VBS suppressor is superior to the competition because it minimizes cycle rate increase, maintains a lower average surface temperature (at 100 rounds), minimizes point of impact shift, passes SOCOM’s SURG high-performance stress test, and is rated for automatic fire. Being rated for automatic fire is the weapon’s ability to fire rounds constantly until the trigger is either released or the ammunition rounds have emptied. The CSW300 also comes equipped with an ambidextrous charging handle which makes this a great weapon for all users.

Additional information

Shipping Weight 208 oz