It was a bit of a improvisation so i did not documented the process, but I did it without a lathe. The electrical tools I was using was basically a dremel and a drilling machine. And the parts I used from ICS was the handguard ”base” and grip, front sight, silencer and the silencer adapter that was originally mounted on the ics outer barrel. Added a very short barrel extension because the placement of the adapter was adjusted slightly.
Baaam! Got inspired by SonnyMP5 (?) and got old SD parts from ICS which after a lot of work finally fit like a glove on my TM Mp5 Nextgen ? Came out amazing!
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