Coming Soon:



For owners of the LWRC International range of M6 and IC rifles we offer the Remastered program to upgrade those firearms to current Leitner-Wise LLC MARKFIVE specifications; the weapon we believe should have been built.


The Remastered program is available to customers in three stages:

  1. Inspection, barrel gauging, replacement of defective components, installation of the patented Leitner-Wise Balanced Gas System.
  2. As above with the addition of the patented Leitner-Wise Long Advance Carrier, Combat Match Bolt, Precision Cam Pin and M2020 Solid Retaining Pin.
  3. As with Stage 1 and 2 but including the Patented Leitner-Wise MARKFIVE Upper Receiver, Barrel Nut and Handguard.

The MARKFIVE is directly descended from the MARKFOUR rifles still produced by LWRCI today. The MARKFIVE was designed to meet and exceed the requirements for the U.S. Army Individual Carbine program.

The ethos behind the design is reliability, accuracy, lightweight, soft-shooting and fast handling, something exemplified by the attention to detail and the patented slim MLOK modular rail system.

The upper rail section on the MARKFIVE is contiguous along the entire sight length and adds two extra Picatinny rail slots to the upper receiver portion. This creates an aesthetically pleasing and practical mounting surface allowing more solutions.

Like all Leitner-Wise products, the MARKFIVE is constructed using the highest quality materials, built on the patented balanced, self-regulating short-stroke gas piston system. Leitner-Wise elevantes the bar on reliability and ease of maintenance – delivering the highest level of performance. The operating system can be accessed quickly by loosening one precision shoulder bolt.

The MARKFIVE – impressively evolved – showing that at all times, Leitner-Wise never compromised on quality and evolution.


Please contact us to discuss your requirements and arrange to send in your upper receiver