PROJECT UPDATE – B&T TP9 2-stage RPS Sear

PROJECT UPDATE – B&T TP9

Description

COMING SOON – NOT YET AVAILABLE

Sep 22

Got the sear out of my own TP9, and have it modeled in CAD.

First samples are being cut.

Expect that I can make this into a decent 2-stage, despite the strange design.  TBD how much of the squishyness of the linkage can be removed.  I’m sure it can be made better, but there is a point of diminishing returns versus cost and R&D time.

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Oct 12, 2017

WooHoo! latest generation of the B&T TP-9 2-stage sear is in, and it isn’t bad at all – for what it is. I was able to get the pull to right at 7lb, with a reasonably crisp 2-stage. First stage is about 5.5lb, with an additional 1.5lb on the second stage. The plastic components, plus the long linkage still leave it feeling a little squishy, so it is not a match trigger, but for a Tactical Pistol it is surprisingly good.  More than I expected. I like!  I need to run some spring math for the new sear, I might be able to tweek it even better.
I’ll get a few of these into testing with some friends.  I’ll also get a few NiB coated (prototypes are just RPS – Rolled Plate Steel).  That might help pull a little more.
 
Tomorrow I’ll go back and re-install the stock sear, ’cause I forgot to measure it, but I know it is heavier with no 2-stage.

I’ll update as we progress.

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