Here is a new old stock Blue Point / Snap-On repair kit for the AT300C 3/8" angle impact driver. Repair kit part number AT300CRK.
Blue-Point AT300C 3/8 Drive Air Impact Wrench
Blue-Point 3/8" Drive Pneumatic Air Gun AT300C
Vintage Blue-Point 3/8" Drive Pneumatic Air Gun AT300C Made in Japan
Blue Point 3/8 Drive Air Impact Gun / Driver USED- AT300C
(2) 44 Oz. Blue Point BF712 & Unmarked USA 38 Oz. Heel Dollies-No Etchings
Blue Point USA 2pc Retaining Ring Pliers Lot PR-249A & PR-38