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Mark II/III VQ sear work with Mark IV ???

737 views 2 replies 2 participants last post by  xdm9mm 
#1 ·
I am thinking of getting just the sear, just want to know if anyone installed a VQ MKIII sear on a Mark IV ? Thanks
 
#2 ·
They'll work, but some fitting may be required.

Early on, VQ was reworking the MKIII sears for people. This was mainly trimming a little off the top/back edge to allow the safety to engage. Later (post recall), VQ started producing MKIV sears that also have a bit bigger notch for the disconnector tab to slide into when the bolt opens. I'm not sure what that's about, but it may have something to do with compatibility issues between the metal and the 22/45 frames.
 
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