Originally Posted by
Bratwurst
Search for premade RJ-11 6-pin cables online. There's one on eBay for 15 bucks plus shipping right now, you can do better than that.
My suggestion is to get a long enough cord and avoid splicing the cable altogether, just disassemble the gun and replace the entire cable where it connects into the gun's circuit board.
Also, this is a lot of hoo haa over your inability to find an inexpensive network/phone plug crimper. You can get them for ten bucks if you look hard enough.