As some may know, I ordered two G Series Whitetail breechplugs, one percussion cap and one musket cap, from Marlowe to see if they would fit the Rio Grande. They arrived today and pics are below. The Rio Grande is the black one in the middle and you will notice it has a knurled shoulder and the other two do not. The original plug is also thicker walled than the G series percussion one but the G series musket plug has the same wall thickness as the original. All three utilize a 3/8 socket to remove/install and have the same thread size. All 3 fit into the barrel nicely but I was concerned that the G series plugs would sit too far into the barrel and not allow the striker to hit properly. Well, no worries with that, both went off just fine when tested. I now feel like I have two good replacements should I need one along with the ability to utilize musket caps. In the near future, I will likely order the Bestill plug to have even better interchangeably.
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