Mossberg 100ATR .243 WIN

Updated August 24, 2026

This Mossberg 100 ATR is a bolt-action rifle chambered in .243 Winchester and fitted with an approximately 20" barrel with a shiny bore. Serial number BA134061, this example remains in good overall condition, although some visible rust is present and should be carefully reviewed in the photographs. Mossberg introduced the 100 ATR as an affordable, straightforward bolt-action sporting rifle intended to provide hunters and recreational shooters with a practical centerfire platform. The .243 Winchester chambering has long been popular as a versatile hunting cartridge, particularly for varmints and medium-sized game, due to its relatively flat trajectory and manageable recoil. The 20" barrel keeps this rifle reasonably compact while maintaining a traditional sporting-rifle profile. Despite the noted exterior rust, the bore remains shiny and the rifle is rated in good overall condition. Please see photos. Mossberg 100ATR .243 WIN Bolt 20 Shiny BA134061 Good

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