Making the AA Arms AP-9 reliable

Making the AA Arms AP-9 reliable:

Back in the mid 90's I purchased a AA Arms AP-9 from a local pawn shop, it's the same basic design as the Intertec Tec-9 but made by a different manufacturer.

When I purchased it, it was missing the extractor, it still had the set screw in the bolt to retain it, just didn't have the extractor.  I test fired it without the extractor and suprisingly, it would fire and eject the cases, just not reliably.  I ordered a replacement extractor and installed it which cured the extracton problem, but it still had a problem ejecting the empty cases.

What I found was that this gun has a stamped steel ejector that is retained by a pin in the trigger housing, the way it was formed, it had a lot of slack and could flop around causing inconsistant contact with the case to be ejected.  I fashioned a shim to place under the extractor from a piece of brass from a bad shell casing.  After that, it cycled 100% and is fairly accurate for what it is.