Originally Posted by
jetfire
No, that's pretty much what it is. It's an 856 Defender (the three inch steel gun) that's drilled for our optics mount. The real engineering trick went into the mount itself, not the actual gun.
The good news is that the 856 uses a strut and coil mainspring, so cleaning up the trigger is simple: dry fire a bunch, then install a Galloway precision mainspring. Leave the trigger return spring alone. That's what I run in my small frames, and how DB set his up on my advice. The end result of that mod should eliminate trigger stacking at the end of the pull and reduce the overall pull weight to under 10lbs while still getting reliable ignition with domestic primers.