CMV is considered harder to cut than stainless, so a high degree of precision is required to make a sniper barrel in CMV steel. CMV steel is military spec, and is designed to handle extreme heat from rapid fire. Knights barrels were originally Chrome-Moly-Vanadium 4150 cut rifling, following the pattern that Obermeyer set with the 5 groove patterned, which he patented, called 5R. From best we can tell, Obermeyer made all of the Mk11 barrels, and a number of the very early M110 barrels, until the production of M110 rifles ramped-up to a pace that Obermeyer and his hand-made cut rifled barrels could not fully meet, at which time, Knights took the barrel production in-house. The M110 contract was awarded to Knights Armaments, built upon the SR25 platform. The M110 sniper rifle system, known early on as the SASS, or semi-automatic sniper rifle system succeeded the Mk11 and become the mid-weight sniper rifle for all of the US forces in 2008. Obermeyer barrels were the best at the time, and continued throughout the life of the Mk11 program, until the dawn of the Mod 1, which became the M110 for the US Army as well as the USMC. What is presented here is the next evolution from the Mk11.īoots Obermeyer had produced the original SR25 barrels in the late 1990s, and continued when the US Navy chose to cut-down the 24' barrels and make other changes to the SR25 and designed the rifle the Mk11 Mod0 in 2001 for its elite snipers in the SEALS and USMC units. Our friends at Potomac Armory have started working with Boots in 2017 to create a barrel system that was both historically correct and highly accurate. Barrett 'Boots' Obermeyer in the late 1990s. The M110 barrel has a long and rich heritage, beginning with the Mk11 sniper rifle system and the 5R rifling invented by Mr. M110 Precision Match Grade 20' Barrel Kit with 4150 5R barrel, 1:11.25 precision profiled and historically correct chambering to fit the M110 upper receiver, including gas block and barrel nut

M110 barrel length