For durability, the current production (19-9) is probably the best thanks to a significant redesign. The front lock is no longer on the ejector rod, it has been moved to the yoke. The barrel has been redesigned, going to a rifled tube, exterior shroud and tension nut, similar to the Dan Wesson system. Gone is the thin spot at the bottom of the barrel forcing cone.

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VCDL, GOA, NRA