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Tag: Bolt Hold Open Actuator

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

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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

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