Why limit yourself to the Sierra kit or it's clones? I got a bunch of lasered kits from Constant that were made to fit the Sierra. Remember that even though they are similar, there are often different ID and OD measurements:wink: for the various styles
I really don't like the Sierra at all, so only one ( out of ten ) actually went on a Sierra.
Either turn a dowel and redrill to the new chosen smaller pen or if you can, simply bore it out to fit he new bigger pen kit.
Here are three identical Sierra Laser kits.:biggrin: Go Bokke!!!!:biggrin: