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CMMG 22 Evolution Preview, BHOA Bolt Hold Open Actuator, .22 AR...

Just a preview of my CMMG .22 Evolution conversion kit for my DPMS. Link to CMMG video showing installation and fit of the BHOA.

CMMG BHOA Fitting Instruction

This video shows instructions on how to custom fit a CMMG BHOA (Bolt Hold Open Actuator) in to a upper receiver.
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