.5-28 Barrels are back in stock and shipping now as are 6 inch tri lugs. I will hopefully get the 4.5" and 8 " tri lug barrels back from Melonite Treatment ~ December 15. I am at the mercy of the melonite treatment schedule at this point. I apologize for the inconvenience.
Custom laser engraving available on barrels by request for an additional charge
Newer griffin tri lug mounts may not work with this tri lug assembly. Older Griffin and all other manufacturer products that are in spec are not an issue
Gen-1 MPX-type replacement Drop-in Barrel & Gas Block assembly:
Our proven 4140 hard-melonite barrel, pre-installed/pinned in a gas-block with included piston and gas plug. These units are drop in ready
There is no additional cost for shipping it is included in the price of all listed parts. If you would like special services for shipping such as insurance or signature confirmation please make an account on our site and contact us for a shipping quote. ILWT cannot be responsible for lost or mishandled shipments once they are dropped to USPS.
Please use drop-down menu for barrel length and 3-lug option, when ordering.
We use the tightest of tolerances and highest quality control.
All barrels are gas-blocks are proudly made in the USA and engraved ILWT.
Gas Port will be a matched .060 for both block and barrel
*As with any barrel swap, have a qualified gunsmith check head-spacing before firing.
DISCLAIMER: “MPX” is a federally registered trademark of SIG SAUER, Inc. and is one of many trademarks owned by SIG SAUER, Inc.
Neither ILWT, LLC nor this website are affiliated in any manner with, or otherwise endorsed by, SIG SAUER, Inc.
The use of “MPX” on this page is merely to advertise the sale of MPX type barrels, parts, or components.