QWK x MM Challenger MK3 in-depth disassembly and reassembly

Warning! Long boring video of me replacing the chipboard, upgrading to aluminum plunger tube/breech assembly and spring for the first batch of the QWK x MM Challenger MK3 standard.

Check out the video if you want to know how the Challenger MK3 is disassembled and reassembled!

0:00 - Intro
3:00 - Bugged 3-shot burst demo
6:10 - Disassembly: Getting the gearbox out
12:30 - Chipboard replacement
19:45 - Gearbox Disassembly
25:50 - Gearbox Internal
31:51 - Spring swap
33:00 - Gearbox reassembly
45:15 - Lower receiver/Barrel fix
47:15 - Assembly: Getting the gearbox back in
49:40 - Barrel and Active Dart Corrector
53:25 - Blaster air seal/testing
54:20 - Firing test demo
56:55 - Upper receiver assembly and wrapping up