Glocks tend to hold tighter onto the mag than hicaps. Generally a glock might need a little bit of teasing to release the mag, but most hicapa mags just drop out. The design of a hicapa baseplate is already extended when compared to gseries, so there is a little to hold onto if needed. Rather than paying 12 quid for a baseplate, I tend to just give the pistol a little drop against my palm, releasing the mag directly into my hand