[TR] Homemade blaster gun

[Randall]

Looks like a flare nut to me, normally used on flared copper tubing.  The
galvanized pipe nipple has been machined to match the threads in the flare
nut.

https://www.mcmaster.com/#flared-compression-tube-nuts/=c73a1aa3991249acb985
573561e6acfdjrlb5i9s

-- Randall 
56 TR3 TS13571L once and future daily driver
71 Stag LE1473 - awaiting engine rebuild
71-2-3 Stag - awaiting gearbox rebuild 


> Below is a cheap alternative, except I can't figure out what 
> the heck to call that little brass fitting at the end that 
> holds the nozzle in place.  Anybody know what I should look 
> for at McMaster Carr?