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Patent applications and USPTO patent grants for Pfefer; Taz B..The latest application filed is for "chamber adaptor incorporated into a modified action assembly for permitting substitution of a first manufacturer specified cartridge for a second substitute cartridge".
Patent | Date |
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Chamber insert lock installed within an AR-15/16 barrel extension for locating and reducing movement of an associated sub caliber action Grant 8,726,560 - Overstreet , et al. May 20, 2 | 2014-05-20 |
Chamber Adaptor Incorporated Into A Modified Action Assembly For Permitting Substitution Of A First Manufacturer Specified Cartridge For A Second Substitute Cartridge App 20120005931 - Kelly; Charles C. ;   et al. | 2012-01-12 |
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