I WAS ABLE TO USE THE HAMMER EXTENTION BUT ONLY AFTER SOME ADJUSTMENTS TO IT. THE PROBLEM WAS WITH THE SCOPE MOUNT ITSELF. IT WAS SO LOW I HAD TO THIN THE TOP OF THE HAMMER EXTENSION TO GIVE IT CLEARENCE SO IT WOULD NOT HIT THE SCOPE. BUT IT WAS NOT THE FAULT OF THE HAMMER EXTENSION, BUT THE SCOPE MOUNT. I AM REALY HAPPY WITH IT AND IT WORKS FINE. THANKS, FRANK HYATT.

Very positive deal

I have mine mounted on the lefthanded side and it works great