Safety warning to owners of Hatsan AT-P1 pistols.

[leonardj]

I do not know if this issue applies only to the Hatsan AT-P1 that I have here for repairs, or if it is an inherent problem, but it is a serious safety concern.

The gun that I have here will fire - with the safety on !

There is absolutely no difference in the operation, or feel of the trigger, with or without the safety on.
Therefore, if you happen to touch the trigger as you place your finger between the trigger blade and the safety lever, you could potentially experience an unintended discharge.

If you own one of these guns, check it out, for your own safety.
Remove the magazine, and prove the gun safe (ie - no pellet in the barrel).
#### the gun.
Without touching the safety, point the gun in a safe direction (yes, even though you are dry firing it), and pull the trigger.
If the gun fires, please refer to the follow up post directly below to remedy the inoperative safety .
If the gun does not fire with the safety on, continue to point the gun in a safe direction, push the safety lever to the off position.
The trigger should operate normally and fire once the safety has been moved to the off position.

 

[leonardj]

My curiosity got the best of me, and I decided to investigate the inoperative safety, and repair it if possible.

What I found was a combination of a much too wide gap between the trigger block mechanism mating points, and a badly mis-adjusted trigger. In the pic below, the red arrows show how much travel is possible in the trigger before it contacts the blocking tab of the safety mechanism. the yellow arrow shows the point at which the trigger released the hammer, despite the safety being on. This point is just a little past the half-way point of the gap between the mating parts of the safety which should block the trigger.

To make the safety operate as it should, the second stage break point has to be changed, so that the trigger block mechanism mating points come in contact before the sear is engaged, and tripped. To do this, the screw indicated by the green arrow in the pic below needs to be turned CCW. about a quarter turn at a time, and testing the trigger at each setting. A point will be reached where the trigger will not act on the sear until the safety lever is moved to the off position. This will result in a bit of take-up before the trigger breaks - in the case of this particular gun, about 0.070" of take-up, and then the trigger breaks cleanly. The screw indicated by the amber arrow should not have to be touched.

I have no way of knowing if the gun came from the factory with the trigger mis-adjusted as it was, or if this was done by the original owner, from whom the current owner purchased it from.
Whatever the case, the test is quick, and the fix is easy.
Shoot safely.