My mag is not feeding anymore, I know CPAK is notorious for feeding issue. How do I fix this?
Try seeing if the mag contacts are getting a proper connection. These models sometimes have a problem with loose contact. Try prying up the mag terminals( in the magwell) with a flathead screwdriver a little at a time until your mag feeds. Is the motor running, and not feeding, or not running at all? If not, then possibly mag motor screwed or an internal wire/contact issue. I’ve never had an issue with feeding on the 105…but my ms 74 did. Just a mag contact issue and checking /cleaning up the t-piece connection.
Lastly, check those untidy wires are not hindering contact within the magwell. Re-route them or just hot glue them into an appropriate position.