with this adapter you can use T15 mags in the MCS BOLT and Blizzard. this one should work with first strike rounds but it have not been field tested so it may give some feeding errors
parts needed for that system is a small pies of a tiny paperclip and a spring 10mm long and OD 4mm
Update: 8-10-2020
mag catch have been updated in differed sizes
movie link:
https://www.bitchute.com/video/NZlRmetBmjad/
link to the Installation video of the T15 and TMC magfed adapter
Link to other T15 adapters
https://www.thingiverse.com/untangle/collections/t15-magazine-adapter
The author marked this model as their own original creation. Imported from Thingiverse.