I absolutely can't recommend these shitty 3d printed Warmags. I got one and within a few months, it was broken, along with both spare crank arms they sent me.
You're MUCH better off buying a proper odin innovations speed loader and using a 3D printed adapter by Airsoft Tailoring:
This way, you have super reliable and replaceable internals in the Odin, rather than whatever junk they put inside the Warmag. I can fill a 35 round mws stag in under 2 seconds easily with this setup. I can also load G&P 46 round mws pmags easily.
Use the TM XL speedloader. It's got the adapter attached. TM GBBR mags are stiff af to begin with but they do bed in. Just tilt the speedloadeer forward slightly and the BBs will go in easier.
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