Im thinking of making new bolt guides and I want to hear your input. Im going to make multiple designs for the tool-less back section and this is just the first styling. Im going to also draw a 2, 6, and 8 winged variant.
The guide will be similar to my low pressure bolt guide mod in that it will use 2 3/8-24 set screws, one to plug the inner pressure chamber and one that's hollow that is flush with the back of the guide. this will allow you to also use an allen wrench key to remove the bolt guide. the stainless steel setscrew will be much harder to strip out compared to aluminum.
so to summarize benifits
added volume for low pressure operation
optimal oring grooves for compatibility with all bolts
low profile tool-less removable back section
stainless set screw for a hard-to-strip allen key removal
custom nylon bolt bumper
please note that the threading on the outside and inside is not present on the renderings.