I sort of had to make it. I live in an army town and picked up the Grenade at a surplus store then i had to go to Lowe's and I bought a coupler (i think that's what it is called, I'm not very tool inclined) that would fit the gear shifter and grenade blasting cap, a file, and some JB Weld. I had to file some scuffs into the coupler to ensure the JB Weld would stick to it then i had to file a little of the grenade blasting cap to get it to fit inside the coupler. Once it finished that, i JB Welded the two together and then just put the blasting cap and grenade together and then screwed her on the shifter in my truck