RL-550 to RL-550B conversion

#1 · December 9, 2012, 6:44 am

What is difference between an RL-550 and an RL-550B? Can an RL-550 be upgraded to be an RL-550B?

#2 · December 10, 2012, 4:00 pm

THe B conversion adds a low primer alarm and a mechanical return linkage to your powder measure. Both can be easily added. #20302 & 20303