Slide not locking back issue

[RandallZ]

I had that problem occasionally with my CBOB, but changed the slide stop and all is well.

Randall

[Dave Waits]

Randall, are the mags you're using the Split-follower type or the skirted follower type?

with the Split follower type you can raise the slide-release tab(The lower tab on the front of the follower) by slightly bending it upwards with a pair of pliers. Otherwise, you may need a slightly stronger magazine spring.
Dave

[cyberphobia]

Both my DW and Metalform mags do not work at 100% on my DW Cbob 10MM
i am going to buy two MEC-GAR Mags from Greg Cote.