I have a 77 laminate and have always had problems with screws coming loose. I contacted Hull Cartridge and they recommend checking them before every use. I've found that not doing so will throw the zero off pretty quickly. Having said that , I fitted some small star washers under the screws and that seems to have helped.

Both hard to beat for the money 👍

My 30k absolutely loves the QYS’s, getting fantastic groups from the standard weight domed pellet! 🎯

My HW95 stock screws kept working loose ( don’t use lock tite; i used a small amount of paint on the screw thread and let it dry after tightened down. They haven’t come loose since. I heard if you use ( locktite ) you cannot remove the screws without damaging the stock. Lovely guns bro.

I've got the 99s. I've also got a pot of clumped pellets shot from it.
My 99s set has a barrel weight fitted, so the iron sights have been removed.
I reckon the barrel weight has made a definite difference.
My regrets are that I haven't got a the latest 98 with the adjustable cheek piece.

Hi Colin, loctite 243 (blue) is the correct product to use, only use enough to cover 2/3 threads all the way round. Do not use the red one for this aplication.

See below description from loctite.
Loctite threadlockers are primarily designed to prevent fasteners from leaking or loosening from vibration. The difference between red and blue threadlocker is a matter of strength and removability. Loctite threadlocker blue is designed to easily be replaceable with common tools, where as red is a more permanent fix.

Great videos!
The end sight fell off mine as well, after about 80 shots from new 😂

i have the same 99s had it a coulpe weeks longer than you the rear trigger screw ,mine went so loose lost thread,so had some chinease thread locker  blue 243. the threadlocker has no make ...but it has worked a treat not touched it in 2 weeks ...just like new..great hw 99s hope that helps!!!left other 2 scews alone

Try ptf tape they use it for plumbing on compression joints it's cheap and comes in like electrical tape

Love the lil hw30❤ If you want quality best bang for the buck😂 are you going to replace the spring with a vorteK ho?

If you replace the spring you better replace the piston seal too buddy. K stands for Kurtz (short) and not for carbine. Cheers!