Compatability Issues Hawkins Hunter DBM & MDT 6mm ARC Magazines?

[DeadmansPoint]

Not really gunsmithing since it's more like asembling Legos, but has anyone had any fitment issues with the Hawkins DBM and MDT AICS 6mm ARC/Grendel magazines? While the magazine fits, it wiggles like a 5 year olds tooth. Moreover, the hunter style button takes nearly all my oomph to depress it enough to drop the magazine.

I'm using a Manners LRH with mini chassis, a TL3 action, and the Hawkins Hunter DBM with MDT 6mm ARC/G AICS pattern mags.