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| EAA Witness: Trigger Parts The trigger system comes in two major configurations; single or double action. It is possible on all models to convert a pistol from single to double action or vice versa. The main part that makes double action possible is the "interruptor". It allows the trigger bar to push, cock and release the hammer to fire the first shot in double action mode. Every shot fired after that is regular single action. If you want to convert your gun from one to the other there are three parts you will need to consider changing or getting: hammer (da/sa), trigger (da/sa) and interruptor. EAA Witness / Tanfoglio pistols come in either large or small frame sizes. All trigger system parts interchange except for the trigger bar (often called trigger bow). |
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Flat Trigger System: trigger, pin, nut,
Medium trigger on the left, long trigger on the right. |
Henning Flat Trigger System This flat trigger is designed to fit in the frame very tightly. It rotates on a solid pin instead of a roll pin which controls the movement. The pre- and over-travel adjustments are highly improved over the factory trigger. You can read the full technical article here. The System comes complete with trigger lever, pin, nut, a #16 trigger return spring, pre- and over-travel screws. The #16 spring is the standard, but if you want to tune your trigger weight you can also get a lighter #15 and heavier #17 or #18 spring. The Flat Trigger is currently available in two different lengths: Medium and Long length. The Medium is located about the same place as the factory curved trigger. The Long is 6mm (about .230" longer than the medium). This trigger system is for Single Action only. I have the trigger lever available by itself for those who already have the short trigger and want a longer one. This lever will not work without already having a complete trigger kit. New is also lighter trigger plunger springs, varying from #18 - #22, allowing you to reduce the pressure from the trigger plunger onto the trigger bar. Factory is #24 so #18 - #22 also allows you to reduce and tune the trigger pull weight ! Pretty cool. The Professional System is the way to go for someone who wants to install it with all the bells and whistles plus have the full range of tuning ability using various springs. |
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Huening Rolling Trigger Plunger
For a smoother and lighter trigger pull, try the Huening Rolling Trigger plunger. An old classic from the old P9 days has been re-vived and is particularly beneficial when combined with the Henning Flat Trigger System. I use it in my gun. I also have lighter trigger plunger springs which will further reduce trigger weight and improve function. We're working hard to make the trigger system as optimal as possible. |
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EGW Prepped Hammer High quality after market hammer with different angles than factory for a crisper trigger. Only works with EGW sear. Single Action Only. |
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EGW Prepped Hard Sear
High quality after market sear which has been prepped. Sear is hardened to Rockwell 55 which will make it last almost forever.. Trigger reset leg has been cut, sear face polished. |
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EGW UnPrepped Hard Sear
High quality after market sear. Sear is hardened to Rockwell 55 which will make it last almost forever.. Requires more fitting than the prepped sear, but is a great starting point for those with enough experience to fit their own sear. |
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Henning Trigger Pins and Reamers
There is no surprise that both factory and after market parts have a variance in their tolerances. If you buy an EGW hammer and sear it means you try to achieve the best possible trigger; crisp and light with a short reset. Besides switching to quality hammers and sears, what makes these parts tick is their fit to the frame. If the pins that holds the sear and hammer are smaller than the holes in the parts they are guiding, the sear and hammer cannot rotate consistently. To do it right - replace the sear and hammer pin with high quality 416 stainless, hardened pins to Rockwell 42. These parts will not wear like the factory pins which gradually gets chewed up. All pins are designed to be ever so slightly oversize because there is a variance in the factory parts. On some guns the pins will slip right in, but for the most part the holes will need to be reamed to fit the pin. Ream the hole to size, not the other way around ! Besides tighter tolerances, the hammer pin pin has been designed for easier dis/assembly. |
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Double Action (DA) Hammer
Fits all models. Comes standard on models such as Stock, Limited Pro etc. |
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Sear
Factory sear. Works with both Single and Double Action Hammers. |
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Sear Housing (with Ejector)
The Sear Housing holds the sear in with a sear pin (9.2) and a sear spring (9.3). These parts are not included in the Sear Housing. The Sear Housing is also the Ejector. |
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Single Action Trigger w/ Over-Travel Screw
Factory spec for all single action models, like Gold Team, Limited and Match. |
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Double Action Trigger w/ Over-Travel Screw
"Chrome look" double action trigger with adjustable over-travel. |
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Double Action Trigger
Factory spec for Stock, Steel models. Available in either blued or "chrome look" finish. |
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Trigger Double Action Interruptor
If you have a double action model or want to convert your single action pistol into a double action, you need to install this interruptor on a factory hammer. Comes as a kit with pin to attach to your double action hammer. |
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Trigger Bar
Fits all models. Hot tip: Polishing sides and where the trigger plunger meets the bar improves the trigger feel. Before you order, make sure you know if you have a small or large frame model pistol. If you are not sure what frame you have, check your mags. |
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Trigger Plunger
Complete plunger consisting of four minor parts. Plunger sits underneath trigger bar. |
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