Timney Trigger Fix for Remington 870

[UltimateGuns]

I feel the Remington 870 is one of the finest firearms ever designed. If not, they wouldn't have sold over 10 MILLION of them! However, I don't feel like the trigger lives up to the quality of the rest of the gun. It's not uncommon for a stock 870 trigger to break at 6 or 7 pounds. This kit will drop your trigger pull by around 2.5 pounds. Mine registers a crisp 3.5 pounds. Granted, that light of a trigger pull may not be responsible on a home defense weapon. But if you don't want to miss that big buck due to fighting a tough pull on your slug gun, this will give your 870 the ULTIMATE trigger!

Designed to work with all Model 870 shotguns, the Trigger Fix allows the user to have a clean, smooth, fully adjustable trigger pull. Every Timney 870 Trigger Fix is packaged with a sear, 3 pull weight springs and a hex head wrench. Simply choose a spring (Red: 2.5-3lb, WhIte: 2-2.5lb or Blue: 1.5-2lb) and then fine tune the pull weight with the hex head wrench for a precise setting.

Whether you are a slug gun hunter, turkey fanatic or trap shooter the Timney 870 Trigger Fix will simply allow you to become more accurate with your pump shotgun. Timney Triggers is proud to offer a lifetime warranty on all of their products, and each trigger is proudly “Made in the USA”.

The Timney Trigger Fix will fit the following:

All Remington 870 Actions
7600 series of pump action rifles
Remington Model # 878
74 series pump action rifles
1100 series of pump action shotguns
Remington model 750 Woodmaster
Remington 742 Semi Auto Rifle
Remington 762 Rifle

These retail for $97.71 plus shipping. I'm offering this brand-new-in-sealed-package kit for $95 shipped and Paypalled.

If you have any questions, please let me know!

[Synchronizor]

Is the Timney sear balanced like the factory sear?

[UltimateGuns]

I'm going to have to claim ignorance here. I'm not familiar with what sear balance is, so I called both Remington and Timney Triggers and talked with a couple engineers. Neither fellow could tell me what sear balance is. What exactly do you want to know? I can tell you that the feel is much better with the Timney unit...a lot smoother pull and crisp break.
Thanks,
Brad

[Synchronizor]

The 870's factory sear is balanced so that it rotates about its center of mass on the sear pin in order to prevent the sear from moving and potentially releasing the hammer if the gun is handled roughly, struck, dropped, etc. If you remove the factory sear & sear pin, and hold the pin horizontally between two fingers so that the sear can spin freely about it, you'll notice that the sear will tend to stay put in any orientation - despite being subjected to a constant upward acceleration of 9.8 m/s^2. A rotating body that has its center of mass located precisely at its center of rotation will never change its rotational motion (or lack thereof) due to an acceleration applied at its center of rotation, no matter the magnitude or the direction of the acceleration.

Of course in the real world, the 870's sear is obviously limited by manufacturing tolerances, and the sear pin is slightly smaller than the pin hole in the sear, so the sear is not always perfectly balanced. Its effective mass distribution can also be altered if it is dirty or worn. Still, a factory sear in proper working condition is quite finely-balanced; enough that the constant forward pressure from the sear spring can easily overcome any minuscule inertial torque.

My concern with the Timney sear is that it appears to be based on the factory sear, but with extra meat & hardware added above the pin hole to allow for pull weight adjustment:

If this takes the sear out of balance, there's a possibility that it could release the hammer if the gun is dropped or struck hard enough on its butt - especially since the Timney kit comes with lighter-than-factory springs.

I'm not trying to put down this product; if it is balanced like the factory sear, great, there's a good trigger clean-up kit for the 870 that, though a bit spendy, is something that can be installed at home in minutes by pretty much anyone. But as you found out yourself, this little detail of the 870's fire control design is not exactly common knowledge, and based on pictures, there seems to be a genuine possibility that Timney overlooked it.

[UltimateGuns]

Makes total sense. I'm gonna go ahead and say this is definitely balanced, because after reassembly after any trigger work, I ALWAYS whack the daylights out of the buttstock with a mallet to make sure the weapon is safe and won't fire accidentally. The Timney passed with flying colors.

[Synchronizor]

Definitely a good sign. Still, next time you install one of these kits, I'd be interested in hearing how the Timney sear behaves when allowed to spin freely about the sear pin as I described previously.