My journey to a better FX Impact trigger

I have two FX Impact MKIIs, a .25 and a .30 which are great rifles but I’ve never been satisfied with their triggers. I’ve watched Ernest”s videos and they were quite helpful to disassemble, assemble and adjust my triggers but (no offense) were lacking in achieving a better feeling trigger. In stock form my .25 had a 1#-6oz trigger pull and the .30 had a 1#-3oz trigger, which is certainly acceptable for a hunting trigger but since mine are mostly used to punch holes in paper I wanted a smoother and lighter trigger pull. First of all I will disclose that I am not a gunsmith nor do I play one on TV but I have always done my own wrenching and tuning on my PB firearms. I am not advocating that anyone do what I have done to their trigger as it may void your warranty and may render your rifle to be unsafe. I am merely documenting my journey to a lighter and much smoother trigger.

I followed Ernest’s videos to understand the relationship of the trigger bar and sear interface which is where I wanted to polish to improve the feel and smoothness of the trigger pull. The pencil is pointing to the interface of the trigger bar and sear.

1588120011_5573601105ea8c9cb913af0.05464479.jpeg
1588120012_3200606225ea8c9cc159062.21812131.jpeg



I proceeded to LIGHTLY buff and polish these interface surfaces WITHOUT altering their shapes or edge profiles. I used a Dremel, cotton buff and Flitz metal polish. I ran the Dremel on the slowest speed so as not to overheat and anneal the surfaces of the metal.



1588120387_3649080785ea8cb43170889.79821087.jpeg
1588120387_7211059955ea8cb43395a78.45416735.jpeg



Next I polished the pins and holes that these two parts pivot on. I used the Dremel to polish the pins and coated a pipe cleaner with Flitz and “flossed” the holes while holding the two parts in a vise. 
1588120763_21158388285ea8ccbb9c5fd5.92808422.jpeg
1588120763_20536817095ea8ccbbc80e11.83938589.jpeg
1588120763_15929974105ea8ccbbec7248.35597693.jpeg




After the parts were polished I washed them in kerosene, brake cleaner and finally dried with compressed air and set aside.
 
The stock trigger spring is 15mm in length. Ernest said he cut his in half but had issues with it not resetting so I didn’t want to go that light. Instead I cut mine down to 10mm in length.

1588121180_18361464055ea8ce5c4c09e6.46641773.jpeg
1588121181_7118020675ea8ce5d110388.41010757.jpeg





Since I had washed all of the parts and removed the factory lube I wiped all of the parts with Strike Hold CLP. It’s a liquid lube that goes on wet then drys leaving a dry lube behind as well as an excellent dry film lubricant. Now it was time to reassemble all of the parts. I lightly coated the pins, used a toothpick and coated the pivot holes, lubed the sear and trigger bar interface points with an excellent grease I got from Cajun Gunworks.

1588121631_11069068395ea8d01f147694.57397795.jpeg
1588121631_600774965ea8d01fd0ee13.01694432.jpeg
1588121632_6389613445ea8d020943336.97999125.jpeg





I should also note that the pins are unidirectional should you remove them. There is a small bevel on one end that helps to align the parts with their respective holes upon reassembly.

1588121747_703076085ea8d09370e177.41735951.jpeg






 
One final point to lube is the sides of the trigger bar where it rubs the housing. I used Strike Hold to lube this area.

1588121934_9003681015ea8d14edd04a7.39309680.jpeg





These are the products that I used.

1588122007_63560525ea8d1979d75e6.69193735.jpeg


It took me about 45 minutes to do both rifles. Here are the before and after trigger pull weights.

1588122078_17869113655ea8d1de2b6f12.29225246.jpeg





Not only are both trigger pulls lighter they are EXTREMELY smooth, predicable and consistent. There is absolutely NO stacking or grittiness yet both still retain a good clean glass snapping break. I am very happy with the outcome. The .30 caiberl rifle is .2 ounces heavier than the 6 ounce trigger on the .25 caliber and I think I can attribute that to its spring being 11mm long and the .25 cal spring being 10mm in length, which is not enough to bother me at this point.


 
Good post. FX triggers are odd to the point of bizarre. I'm surprised they work as well as they do, which ain't so great. Glad you got yours working for you. The only FX product I now own is a Royale 400. As a general purpose field and plinking rifle, the trigger is acceptable, but I doubt I'll own another FX rifle unless they redesign the trigger. There are many good, multi-lever trigger designs, why reinvent the wheel? It might mean adding a bit of bulk to the receiver, but a trade off I think well worth it. 
 
Thanks for the detailed post. It was great timing too as I was just thinking that I’d like to lighten the pull weigh on my Impact. Is your trigger still a two stage trigger?

Yes it is.

Just a word of caution to be VERY VERY careful if you or anyone else decides to embark on this task because you could quickly render your rifle unsafe. Its relatively easy to do once you understand how the trigger works. Its was helpful for me to review Ernest's videos several times beforehand. Also remove the black rectangular cover plate and dry fire the rifle (IN A SAFE DIRECTION) MANY times to observe how the mechanics work BEFORE you remove the parts. I also took a close up picture of the parts, in place, BEFORE I took anything apart. BTW, I did have to review that picture before I assembled them the first time.
 
Well done sir!!!

Trigger is the only thing I don't like about Impact, blows my mind when they call it "two stage match trigger"

Thank you for detailed step by step instructions.

B

Thanks for all of the kind words guys. Glad I was able to explain the process in a manner that was easy to follow and understand. I just wanted to share my journey in hopes of helping others who wanted to try something similar.

I do agree that the Impacts trigger isn't a two stage trigger in the pure sense that I am used to on other firearms. I wish the first stage was much lighter and freer moving than it is with a better and more tactile wall before the break point. However, what I was able to accomplish with my tutorial was a VAST improvement over what I did have.
 
I did mine tonight and yeah it made a nice difference. I cut the spring just a small amount, did the same on the Boss before.

Might fiddle with it a bit more but im 98% there. +1 to you!

I used some mothers billet polish i had and some liqui moly paste thats worked well for metal on metal for me.


Congrats Glem. Thanks for reporting your success too!
 
Very good write up with nice pictures. I don't have an Impact but I do work the triggers on almost every gun I own and have done so for many decades. Two things I would consider. Lube on trigger parts is something I rarely do. It seems to sometimes change characteristics related to temperature as well as possibly changing trigger feel/function as the lube spreads. It can also attract grit. Some disagree with this idea and others support it. I prefer fully polished at all contact points (even the sides) but dry. I hope the lube works well but if any issues arise try cleaning all of that off first. As to the spring, I usually try to find a much lighter spring but leave it a bit longer than the cut spring. That saves the stock spring and also it often seems to provide a bit more preload for trigger return without raising felt pull weight. Just a couple of things to consider.
 
I was off work today and the wind is gusting to 50 here in KC. Happy trigger day! I followed your directions except I'm too lazy to polish the through holes for the pins. Also I'm afraid of using a Dremel, so I just used a file covered with 2000 grit paper. For me that was the safer route. In the end I got the pull down to 11 oz and a super crisp break.. Im super happy with that. Thanks again for taking the time to post. Well worth the time.