▁( J une ▁ 1 2 , ▁ 1 9 3 8 ▁– ▁October ▁ 2 0 , ▁ 2 0 1 1 ) ▁was ▁an ▁American ▁gun sm ith . ▁ ▁The ▁Ass ass ination ▁of ▁President ▁John ▁Kennedy ▁Ry der ▁worked ▁at ▁the ▁Ir ving , ▁Texas ▁Sports ▁Sh op ▁and ▁stated ▁that ▁he ▁possessed ▁a ▁record ▁of ▁Lee ▁Har vey ▁O sw ald ' s ▁name . ▁The ▁Warren ▁Commission , ▁which ▁investig ated ▁the ▁assass ination ▁of ▁John ▁F . ▁Kennedy , ▁looked ▁into ▁a ▁report ▁that ▁O sw ald ▁had ▁a ▁teles cop ic ▁sight ▁mounted ▁and ▁sight ed ▁at ▁the ▁store ▁in ▁which ▁Ry der ▁was ▁employed . ▁Ry der ▁showed ▁agents ▁of ▁the ▁Federal ▁Bureau ▁of ▁Investig ation , ▁on ▁November ▁ 2 5 , ▁ 1 9 6 3 , ▁a ▁tag ▁which ▁he ▁claimed ▁was ▁in ▁O sw ald ' s ▁hand writing . ▁The ▁und ated ▁tag , ▁with ▁the ▁name ▁OS W AL D , ▁att ested ▁that ▁three ▁holes ▁had ▁been ▁d ril led ▁into ▁an ▁un spec ified ▁kind ▁of ▁rif le . ▁Further , ▁a ▁teles cop ic ▁sight ▁had ▁been ▁mounted ▁on ▁the ▁rif le ▁and ▁b ores ight ed . ▁The ▁customer ▁paid ▁$ 4 . 5 0 ▁for ▁dr illing ▁and ▁$ 1 . 5 0 ▁for ▁b ores ight ing ▁the ▁rif le . ▁ ▁Ne ither ▁D ial ▁or ▁his ▁employ er , ▁Charles ▁W . ▁Gre ener , ▁believed ▁that ▁they ▁had ▁worked