I'm assuming your talking about house type paint and not something high end like car paint. If so, the answer is yes, but you must de-gloss it first to open pores in the old paint and give the new paint something to grip on too.
To de-gloss, you can use sandpaper (150 grit and above is better) to "scuff" sand (just scratching the surface a bit, not really sanding anything off of the wall), or use a commercial de-glosser (such as krud kutter's "gloss off" etc...) which in most cases, you have to rinse off before repainting, but does do a more through job. If the old paint is really hard and shiny, you might have to de-gloss AND use an adhesive primer (also called "bonding" primer) first to insure your new paint sticks and doesn't peel.
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A gloss glaze is a glaze that potters tend to put over underglazes to give it a glossy finish. Gloss Glazes tend to look pink before fired but due to the chemical processing in the Kiln, dry clear.
Wards, WesternField did sell at least one line of pistols, I have one, a WesternField Model 5. This is a nice simi auto, clip fed, made by Unique Fire Arms of France. This is all I know about this pistol but I sure would like to learn a lot more. Hope this helps a little. Wards also some some Iver Johnson .22 revolvers. The WesternField 75 is basically the Iver Johnson 'Sealed 8' revolver.