Proline Automag Autoresponse Frame - Sear Spring ID?

[LudovicoSoldier]

Can one of you who have an Autoresponse frame pop the sear spring out and measure it? I picked up a frame without this spring and need to find a replacement!

[BrickHaus]

Would you be willing to share the cam design on yours? I wonder if I could mod a benchmark frame to be an AR frame.

[Ecapnation]

It's a bit more involved than a sear

[BrickHaus]

Ecapnation I have heard its a pretty trrck mechanism. But I also assumed it to be some type if cam that attached to the trigger. Effectively making depressing the on off pin at mid stroke. Then a spring to keep things biased.

But you would know better than most how much work it would take to replicate.

[Ecapnation]

If I had one in front of me to reverse engineer it wouldn't be impossible.

It's a sear, cam, trigger plate and spring perch milled into the frame

[F1FX]

The spring is about 4cm.

[LudovicoSoldier]

Hmmm soooo... is the specific sear with the round cutout strictly required for an Autoresponse frame? Vintage videos ive seen from Proline seem to indicate that you just re-use your stock sear.

[scottieb]

I have a bunch of photos that show the correct assembly of that frame, however they on a laptop that just died. Hopefully I can get around to taking it in tomorrow to see what I can get saved. I will keep you in the loop.

[tunaman5]

I have the springs here...along with ONE LAST set of the linkage and pins. Shoot me a PM and I'll get a spring out to you.

[LudovicoSoldier]

You are THE MAN! As ever! PM’d

[tunaman5]

Would you be willing to share the cam design on yours? I wonder if I could mod a benchmark frame to be an AR frame.

you can. All you have to do is get the linkage and a screw in the frame to hold the spring.

[tunaman5]

If anyone wants to take on this project PM me.I'll let it go cheap.

[StaticShocked]

That is tempting. I literally have almost that same concept sketched out on paper because i wanted to try it.

[tunaman5]

Looks like F1FX was first

[BrickHaus]

I just woke up! Haha

[Alexndl]

If you ever find a second one...

[LudovicoSoldier]

Side quest: does anyone know what would be good shims to pack out the trigger/pin on an Autoresponse/Benchmark frame? I want to remove side to side slop. Brass or nylon preferably.

[Grendel]

Either would work fine as a shim material. Brass will give you finer control and longevity. Nylon is easier to work with, and you can sand to dimensions without having to stack brass.

[tunaman5]

Cut some shims from a piece of Macro line...

[F1FX]

I have used the nylon washer that came from my emag parts bin. I think it’s the washer used on the battery post. Took majority of the wiggles out, still a little but I’ve been very happy with the improvement.

[LudovicoSoldier]

One interesting thing that I've noticed is that when you are using a normal Mag sear (and not the AR specific one), the frame safety doesn't work. I may grind a bit out of my sear to fix this...