Lost or broke a baseplate? Want to add some trademarks to your kit? This Glock debossed baseplate fits the bill. It may go on snug the first time, but once you take it off and put it back on a few times, it will loosen up a bit.
It seems to be very snug on my metal G23 mag but more comfortable on my plastic G17 mag. It became more comfortable as I broke it in a bit.
It works perfectly with 15% infill, but it might be able to go lower.