Our Extreme Service Mainspring Housings (MSH from here in) are CNC machined from bar stock to consistent dimensional tolerances.
This section lists FLAT MSH for Gov't Models, Commanders and others using a full length frame. Does not fit SVI, STI, etc.
Available in blued carbon steel and stainless steel, we offer them with 25 lpi machine cut checkering, but will be bringing more options on board as machine time permits.
