I'm getting ready to replace my firing pin in my TRA, it has the new adjustable 510. Is it done the same way with the new 510 as it was with the old 510? Remove the nipple, swap firing pins, replace nipple and done? The reason I ask is because the nipple on this Reo doesn't seem to want to budge and I don't want to force it in case I'm not supposed to turn it.
Yes.. I just done one on a newer adjustable 510. With the top end facing you turn the nipple to the right to loosen. Needle nose plyers will work good.
Tighten it up to the left till good and tight.
You won't be abe to move the contact pin once it's snug so you should find something to place under the contact tip to hold it just right before snuggling it up.