On the topic of removing the aperture, the former dovetailed rear sight on the 77 offers a good opportunity to take a dovetail blank drill and tap it for the same thread of the aperture (whatever that may be I do not know off the top of my head) and create a storage spot for a spare aperture, I believe skinner sights have this feature on some of their models and its a good idea so long as they stay put. Only thing is to make sure its not a snag point.
|Apertures can work loose under lots of conditions. |
Prolonged range sessions or bumpy bush plane rides.
|A number of "O" rings slipped over the aperture shank can keep from losing your zero or aperture entirely.|
|Much more secure and a worthwhile piece of mind.|