I think centerfire systems has them in stock.

I haven't done a 2077 so I can't say for sure how this will fit in there. It's located by the shelf and secured with the end cap. I should probably look at the 2077 to get a better idea of compatibility.

I have metal trip bars on order. As is they wouldn't bend them as there is a slot too close to the bend area. I'm going to bend them myself first to verify function, then possibly make the changes if there are issues bending in the vice.

It is a good bit of work to get the trip bar set as they have to be hand fit to get correct timing. It's not tricky, just takes time. You'll also need a FA carrier and need to square off the notch with a Dremel.

I'll be posting open beta here in the beta room, and on WG after I know the metal trip works. I'm working on some documentation now. I'm also trying to work out a hammer profile that doesn't require welding.