"target" models) that could be adjusted for elevation by means of a screw, but these were very uncommon. The barrel on all models inserted into the front of the receiver and was secured by a cross-pin. A frustration often reported by shooters was that the pistols were "finicky" about ammunition—that they would only function well if extra high-velocity ammunition was used. This tended to contribute to a lack of popularity, because it meant that more expensive ammunition was always required. Apparently, standard velocity ammunition did not create sufficient back pressure when the pistol was fired to fully drive back the toggle and extract the spent cartridge case—especially after firing several rounds, which tended to build up residue in the chamber. In all probability, it was the fact that the chamber of the Stoeger .22 Luger, having been manufactured in Europe, was of a size to accommodate .22 ammunition that was also manufactured in Europe, which tended to be imperceptibly smaller than US manufactured .22 ammo. The Stoeger had no problem cycling with European ammo, but standard velocity US ammo would tend to "stick" in the chamber. This effect can be remedied by having a competent gunsmith to very slightly ream (or even just polish) the chamber. A helpful safety feature is that the toggle (bolt) remains open when the last round is fired. The pistol grips sometimes came as checkered walnut or plastic (less common) or smooth walnut without checkering (most common). References External links Manual Pistols