Manual

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MOSSBERG 151K .22 Caliber Auto-Loading/Bolt Action Rifle

(Production: 1950-1951)

This is an updated manual comprising of all data for the Mossberg 151K, and includes

information on the 151M, 151M(a), 151M-B, 151M-C.

UPDATED MANUAL DATE: FEB 2010

VARIOUS SOURCES UTILIZED, INCLUDING ORIGINAL DOCUMENTATION

Summary of content (6 pages)

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MOSSBERG 151K .22 Caliber Auto-Loading/Bolt Action Rifle (Production: 1950-1951) This is an updated manual comprising of all data for the Mossberg 151K, and includes information on the 151M, 151M(a), 151M-B, 151M-C.
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EXPLODED VIEW
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The 151K is a very well made .22 rifle, designed to be fired for a long time (1000 rounds or more) before it is necessary to be cleaned. It is still recommended that it be thoroughly cleaned and lightly oiled after each use, or at least every 500 rounds. If cared for properly, this firearm will last many lifetimes. Ammunition – Use only .22 long rifle high speed or regular cartridges, either dry or lubricated, except hollow points. DO NOT attempt to use short or longs.
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screwdriver, unscrew and remove the BREECH CAP, then take off “safe” by pressing forward slightly on COCKING KNOB/LEVER and lifting out of safety hole. Slide the bolt back until the COCKING KNOB/LEVER lines up with the hole in the receiver. Remove the COCKING KNOB/LEVER by lifting straight out. Grasp the RETRACTING SPRING BUSHING which now projects from the rear end of the receiver and slide the BOLT out. To Disassemble the Bolt – Drive out PIN after which all bolt parts can be taken apart.
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SUGGESTIONS If hammer is cocked there will be an opening in the rear of cocking knob slot in the receiver. Do not remove outside magazine tube. This feeding mechanism is accurately adjusted to gages at the factory and could easily be distorted when out of the stock. A clean gun works better. Clean after 500 rounds or as periodically as possible. Misfires are usually caused by a dirty action. Keep takedown screws tight. This means spot checking on intervals before each use.