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by GruntDoc
Wed Jul 03, 2024 12:09 am
Forum: Olympic Pistol
Topic: MG4 double fire
Replies: 20
Views: 6415

Re: MG4 double fire

If you want to try different recoil springs (and they are available), it helps if you can figure out what you've got. You need the length (which is easy), the outside diameter (easy), the number of turns and the wire diameter. The number of turns can be a little tricky. I made up a template to make...