Mossberg 930 JM Pro/Rythm - Manual (Page 3)

CONVERTING FROM 13 SHOT CAPACITY TO 5 SHOT
CAPACITY (Patrick Flanigan Rhythm Series
™)
Your Patrick Flanigan
Rhythm Series™ firearm is supplied with the
components necessary to convert it from a thirteen (13) cartridge (twelve
(12) in the magazine tube, plus one (1) in the chamber) capacity to a five (5)
cartridge (four (4) in the magazine tube, plus one (1) in the chamber)
capacity.
Move the safety button fully rearward to the “ON” (SAFE) position
and visually and physically check the chamber, elevator, and
magazine tube to be certain the firearm is unloaded before
disassembling the firearm. Wear eye protection during disassembly
and cleaning to protect your eyes from oil spatter or spring loaded
components.
1. Unscrew the magazine end cap. CAUTION: The magazine spring
is under considerable pressure and is retained by the
magazine end cap. The magazine spring will extend to its full
length when the magazine end cap is removed.
2. Remove the magazine spring.
3. Remove the two magazine tube clamp screws from the magazine
tube clamp.
4. Remove the magazine tube clamp.
5. Unscrew the magazine tube extension nut and magazine extension
from the magazine tube.
6. DO NOT REMOVE THE MAGAZINE FOLLOWER.
7. Insert the cylindrical boss of the magazine cap detent into the small,
tapered coil of the short magazine spring.
8. Place the magazine spring retainer over the magazine cap detent
aligning the two (2) magazine cap detent prongs with the slots in the
magazine spring retainer.
9. Insert the magazine spring into the magazine tube, open end first
(the end with the magazine spring detent and the magazine spring
retainer is inserted last).
10. CAREFULLY compress the magazine spring and press the
magazine spring retainer into the magazine tube until it is flush with
the end of the magazine tube.
11. Install the magazine cap supplied with the conversion components.
Tighten the magazine cap hand tight only.