I have the Apex action enhancement trigger in my fn509 and while it's noticeably better than the factory trigger, it leaves some to be desired. that's where the spring kit from Mcarbo comes in.... it takes this trigger (and any 509 trigger) to a new level. I love the difference it made to this gun, it now feels like it has a "nice" trigger.

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Follow the “build list” link below for the stuff I used.
🔴Build list:
[ Ссылка ]

🔴Merch Page:
[ Ссылка ]

🔴Instagram:
[ Ссылка ]

🔴Rumble Channel:
[ Ссылка ]

Other videos I Mentioned:
Stribog video: [ Ссылка ]
224 Valkyrie video: [ Ссылка ]
FN509 videos: [ Ссылка ]
[ Ссылка ]

Some links may be affiliate links which earn me a small commission from the purchase at no cost to you. I’m part of the amazon affiliate program and I’m an amazon associate.

This video is for educational and entertainment purposes only, while following YouTube Community Guidelines. Correct gun safety regulations and rules have been taken into account and put into action. All footage at the range is at the consent of the shooting range, or was taken at a private range. This video is not a promotion for selling firearms. All firearm modifications are from common, established manufacturer’s that create safe firearm parts and accessories. This video is not showing how to modify the rate of fire from semi-automatic to automatic, it is simply displaying a replacement for factory parts. Such modifications made do not change the safety of the gun, and does not affect the potential risk of harm or death.

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