View Full Version : Reducing pin hole in AM/MM sear to work in RTPro?
OneSelfLost
06-01-2016, 10:28 AM
Hey everyone,
All these AM/MM sears in my kit and all I need is an RTP sear.. Typical!! Haha
Does anyone know the ID and OD of the reducers? Think they'd be easy enough to make? I'd rather save a few bucks and not buy a new sear if I can avoid it.
Thank you,
OneSelfLost
06-01-2016, 12:03 PM
Bushing! That's the word I'm looking for!
Tunaman
06-01-2016, 04:26 PM
Bushing! That's the word I'm looking for!
You are going to have a tough time drilling that sear. They are VERY hard. The bushing is not available. You will go through 50 dollars worth of aggravation for a 30 dollar sear...
What Tuna said but the measurements on the RTP bushing is: OD 0.25" ID 0.125
OneSelfLost
06-02-2016, 08:08 AM
I'm not planning on drilling anything, just finding a bushing. However, you're probably right.. I'll shoot you an email soon, Tuna.
Thanks guys!
You can't just put a RTP bushing in a Automag sear, the AM sear pin is .187". You might be able to turn one to fit on a lathe but the side walls would be fairly thin. (0.31")
OneSelfLost
06-02-2016, 11:20 AM
Ahh okay! Definitely more work than its worth then! Thanks Luke!
Spider-TW
06-02-2016, 12:26 PM
You can't just put a RTP bushing in a Automag sear, the AM sear pin is .187". You might be able to turn one to fit on a lath but the side walls would be fairly thin. (0.31")
Yes, thanks. :)
I've wondered how that would come out also. In brass, that thin wall would not press fit well, making it either loose or glued-in.
Tunaman
06-02-2016, 03:59 PM
Yes, thanks. :)
I've wondered how that would come out also. In brass, that thin wall would not press fit well, making it either loose or glued-in.I believe the bushings are bronze...not brass.
Cyco-Dude
06-04-2016, 12:56 AM
sell an extra am/mm sear to help offset the cost of an rtp sear and axle.
GoatBoy
06-05-2016, 07:59 PM
The two sears have slightly different geometry even if you fill in the hole. Refer to the CAD files.
Spider-TW
06-07-2016, 02:55 PM
The two sears have slightly different geometry even if you fill in the hole. Refer to the CAD files.
What? More "science"? aaagggh!
:p
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