The Greener GP is a versatile 12-gauge shotgun featuring a Martini-style falling block action, produced from the 1910s to the 1970s. Its breech-loaded design allows for a wide variety of ammunition, including modern smokeless powder rounds, specialty loads like bean bags and incendiary slugs, and field-expedient cut shells. The shotgun also boasts a practical takedown feature for compact storage and was historically marketed as an affordable 'gentleman's trap gun'.
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