Hey JHS27275, I read your entire sticky on a ps90 barrel swap and thank you for that and for the pics.
However, while I am mechanically inclined, I'm not a gunsmith and can see myself screwing up the 16.1" barrel. I would like to salvage it if possible. For instance, I am unclear as how you drill out the blind pin without drilling through the barrel itself.
That said, since many people will be SBRing their PS90 rifles soon with these new barrels, can someone post a video of you actually doing it? There are none on youtube. Many here, including myself, would be extremely grateful.