[BuckRogers2000]

I'm finally getting round to adjusting my iron sights. I have the elevation adjustment with no problem but I can't break the rail loose for the windage - either with the tool or the allen wrench. Is there any trick that would help? I'm using as much force as I dare, so as to not strip the grooves or break the wrench...

 

[mjk1]

I have had problems when removing mine but only had 1 weapon I used with that B/U sight. If you can't break free the allen head / flat head screw... you won't be able to adjust the windage . Try some heat ( hair dryer/ torch/heat gun ) and I like PB blaster when things are stuck. Heat/ tap, heat/ tap, heat cool... ect... until it gives. Of course not cherry red heat....
I also use oil on the tools when interfacing with gun parts ... it helps reduce the scuffing.

 

[SAVAGEJIM]

I'm finally getting round to adjusting my iron sights. I have the elevation adjustment with no problem but I can't break the rail loose for the windage - either with the tool or the allen wrench. Is there any trick that would help? I'm using as much force as I dare, so as to not strip the grooves or break the wrench...

Do what MKJ1 said.
Additionally, try this if your windage screw is really stubborn: Instead of using the allen key inside the windage tool knob, try to loosen the hex nut first before even putting the windage tool in.
If the allen nut is still stubbon, try to spray some break-free into the threads of the allen nut and then loosen it with the allen key.