FWB AW93 Occasional FTF

I need help figuring out the problem with my AW93.

With some types of ammo, specifically, Eley CMP Bulk, Norma TAC-22 and Wolf Match, I get occasional failures to ignite. I see firing spring strikes on the round but it does not fire. I could chuck it off to poor quality control with the cheaper bulk ammo (Eley CMP and Norma TAC-22) but I am thinking that Wolf Match should be more reliable.

The pistol functions flawlessly with SK Pistol Match, CCI standard and Geco Match and Semi-Auto ammo.

Should I try replacing some of the springs in the pistol (hammer spring, firing pin spring) and/or the firing pin, or just leave well enough alone and use the fully reliable ammo for matches, and the other stuff for training only?

Best Regards,
Oleg.

I don't think I've ever had an FTF in mine.

I'd definitely look for carbon or lead flake buildup in the recess at the front of the bolt, anything that might hold it or the cartridge from going fully into battery. And do a plop test on the chamber, with multiple rounds of the troublesome brands. If nothing there, then take a look at firing pin and firing pin spring, mainly for crud but also for any damage. If none of the above, shoot what goes bang.

No experience with the Aw but HS, SW41, Hammerli and Sp22 all have firing pins that go thru holes in the bolt face. Pull the firing pin and use bore solvent on a q-tip and pipe cleaners to ensure there is no crud buildup preventing full firing pin travel.

Thanks folks, I will definitely give the pistol a thorough cleaning. I have never disassembled it beyond field stripping, so perhaps, it's time for a tear-down.

Best Regards,
Oleg.

There really isn't anything to tear down! Or put another way, don't even think of opening up the trigger mechanism.

Field stripping by removing the slide gives access to the bolt face and breech, then driving out one roll pin opens up the firing pin. Apart from finding the correct size punch (1.8mm, it's a 2mm roll pin - a 5/64" might be tight!), it should take less than an hour.