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Review
So much better. Highly recommend you upgrade
Installed this kit in combo with mirror polishing all contact surfaces on the striker, striker block, and sear. The trigger wasn’t bad to begin with but was heavy as hell. Mine broke consistently over 7lbs. It’s now just over 4lbs and breaks as crisp/clean as a nice single action trigger! For the price, you absolutely cannot beat it. No need To spend $150 on an apex trigger to get a really nice feeling trigger. 100% recommend this kit if you have a little mechanical aptitude and can polish a few parts without taking off any material or changing any angles.
Done exactly as advertised I'd highly recommend this upgrade to the 509
first time trying this on any of my firearms, went flawless thanks to the how to video, someone mentioned watch the video before you try it and i agree completely if nothing else to make sure you have the right tools, i laughed at the grease but realized how neat of a trick it is to hold that spring in place, you can do it without like i did but it would have been easier with. dont have a gauge but noticed much less movement at the range. every little bit helps !
Perfect, it works as stated, my FN509 never felt better in trigger pull. The price is worth every cent in getting your FN509 trigger pull smooth, and with less pull weight. As SEAL Team-1 would say,during CQB training, "Smooth is Fast"
This spring set reduced my trigger pull by more than a pound. But what was more impressive was the worth ethic and dedication of the company; not only were my springs shipped the next morning, but they also followed up with an email with a video link providing informative step by step instructions. No guesswork.
Kit shipped and delivered quick with no hassles. Installation instructions were clear, precise and easy to follow. Spring kit works exactly as advertised, lowering trigger pull and reset. Overall, I’m extremely satisfied with this product and would recommend to everyone.
After watching the excellent installation video on YouTube I ordered three FN509 spring kits. The kits were installed in FN509T, FN509CC, and FN 509LS. Installation went very well. All three 509's have greatly improved triggers but the LS trigger is now awesome. I don't have a trigger weight gauge, but a guess would be that the LS now has a trigger pull of about three pounds. Just need some range time now to see how good the triggers really are.
I wasn’t super impressed with my FN509 trigger out the box even after 1k rounds. Found this spring set and gave it a try with an apex trigger. You can tell these aren’t just some springs in a pack, they really did there homework to get this set up to work right. All I can say is wow! This made a world of difference in the gun and would recommend anyone with this pistol to give it a try the video also makes it fool proof if you’re nervous. Thanks fellas,for setting me up with a great gun!!
If you don’t have the experience of taking pins out of polymer frames, please ask your local gun smith to do the work. This product really does improve trigger pull weight. I’m very happy I tried it out and someone recommended it to me.
First, Shipping was really fast. I ordered the FN 509 trigger spring kit on a Wednesday night and received notice of shipping the next day. I purchased a FN 509C MRD which had a very gritty take up and fairly heavy trigger pull. My Lyman trigger pull gauge measured an average 7 lb. 3 oz. trigger pull. After polishing some trigger components (mainly sear to striker interface) and installing the spring kit the average trigger pull was reduced to 4 lb. 8 oz. with a smooth trigger take up.
Installed and tested in an early FNS-9 Longslide stainless, as well as a newer 4.25" model (I'm in Canada). Reduced both from 5.5 lbs to 4.0 lbs. The tutorial made the sear assembly dead easy. Runs great, works flawlessly so far, tested with a 50rnd box of Remington UMC. If anything changes I'll change my review; I seriously doubt that will happen though, judging by past experiences with M*Carbo product. Job well done, I fully endorse!
Purchased this on a Friday and the following Monday it was in my mailbox... can’t get much better than that for shipping. I am already experienced with 509 disassembly so installation was easy, but it should be easy for anyone with firearm disassembly experience. Overall the kit reduced a little over a pound of pull weight and took away the awful spongy crunch the stock 509 trigger has. For 19.99 it’s a great upgrade.
Installed this on a 509 tac, reduced trigger weight, smoother shorter take up, shorter reset, great addition to the Apex trigger, turned this gun into a truly excellent shooter.
I installed this spring kit in my 3 FN 509 pistols myself and absolutely love the trigger pull now! I followed the MCARBO video for the first install and found it very informative and instilled confidence in me to strip the pistol down to and change springs. I am extremely happy with this kit and with MCARBO’s ordering process and logistics. I will order from them again!
Amazing trigger now. Super fast shipping even with the pandemic going on. Trigger is now down just below 2 pounds. Thanks M*Carbo!