I found 4-18 rounder sp101s I forgot I had, that had them, took 2 of them off to put on the 2- 16 rounders. You were right, they fit and filled in like a glove on the PCR. Now I am going to order the plus 2’s to take the place on the 18 rounders for 20 rounds.
Now my PCR has 6-15 rounders and 2-16 rounders. My 75B has 8-17’s with plus 2’s, 6-17 rounders that will soon be all plus 2’s and 4-18 rounders soon to have plus 2’s. I hope the plus 2’s will go on the 3p4- 18 rounders?