Had time to install the threaded sight post/barrel band on my 1377 today. Fit and finish of the band are excellent, right down to the relief cuts below the fiber optic bead to reduce glare. How that lines up with Crosman's less-than-stellar QC left some to be desired. But, some smithing with files had everything worked out. I went ahead and used the supplied screw-in pivot because my 1377 isn't anything fancy. On my 1322, I'll use my custom solid steel pin. I used the supplied drill bit to size the hole for the screw in pin. That's where I noticed the two holes on each side of my tube don't align perfectly with the breech flat (thanks for the breech, JMJinNC). But, with a few touches of a round file I widened the hole on the low side by a few thousands and was able to get everything aligned with no play once tight. I dropped on a Williams WGRS 54 sight and it shoots like a champ. Clover leafed a three hole group on a green apple at 10 yards as it got dark tonight. Fun package to shoot and as a bonus, i can unscrew the peep insert and run it open if I choose to shoot it as a pistol - all without re-sighting.