Mossberg 935 Magnu - Manual (Page 17)

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RECEIVER CLEANING
Clean the inside of the receiver with a rag or soft brush, giving special attention to
the tracks which guide the bolt and slide. Place a few drops of light oil in these
tracks when clean. Care should be taken when cleaning the exterior surfaces of
the receiver to prevent cosmetic damage. Never use a brush with metal bristles, as
this could remove the protective coating on the receiver.
TRIGGER HOUSING CLEANING
Brush loose residue from the trigger housing with a soft bristle brush. Never use a
brush with metal bristles, as this could remove the protective coating on the trigger
housing.
Never pull the trigger while the trigger housing is removed from the
receiver, as damage to the trigger housing or personal injury may
result.
GAS SYSTEM CLEANING
The gas system includes the magazine tube, seal ring*, gas piston, spacer tube,
gas system return spring, and gas cylinder portion of the barrel (Figure 15). These
parts should be thoroughly cleaned using solvent. A stiff brass bristle brush is
useful for removing stubborn deposits.
Apply a light coat of gun oil to all metal parts and then wipe thoroughly with a dry
cloth. Excess oil will accelerate the build up of carbon residue in the gas system
and may have a negative effect on the firearm’s performance.
Camouflage firearms: Caution should be exercised to avoid exposure of
camouflage patterns to strong solvents or insect repellants.
*Seal ring is not used in all models
ACTION RE-ASSEMBLY
1. Position the link in the slot in the rear of the slide (Figure 13).
2. Attach the link to the slide with the link pin. The link must be installed with
the tab side facing down.
3. Place the bolt on top of the slide, making sure it sits flat.
4. Install the bolt and slide assembly into the front of the receiver, link first.
The slide may need to be “wiggled” side to side in order to engage the
tracks in the receiver. The bolt will stop when it is nearly flush with the front
of the receiver. While aligning the end of the link with the return spring
plunger, press the bolt release. This will allow the action to seat in the
receiver. The end of the link must be in the return spring plunger! Push the
bolt rearward into the receiver just far enough for the operating handle slot
to become fully visible.
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