Mossberg MMR - Manual (Page 16)

16
Clean the bolt carrier key with a pipe cleaner (Fig. 39). Clean the bolt hole and
cam pin slot with patches and a soft nylon brush. Dry the bolt hole and cam pin
slot with clean patches.
Remove powder residue and carbon from all external surfaces of the bolt using
solvent-soaked cleaning patches and a brass brush. Clean the firing pin hole
with a pipe cleaner. Apply solvent to the gas rings until they are able to move
freely. Wipe all the remaining solvent off of the bolt using clean patches. Inspect
the bolt (Fig. 40) and bolt face (Fig. 41), firing pin (Fig. 42), cam pin (Fig. 43), firing
pin retaining pin (Fig. 44), extractor (Fig. 45), and bolt carrier (Fig. 46) for cracks,
fractures, chips and wear.
Should you detect any cracks, fractures, chips, or excessive wear,
do not use your firearm until you have contacted the Product Service
Center or a qualified gunsmith. Using broken or worn parts may
result in a dangerous malfunction, damage to the firearm, and serious
personal injury to the shooter and/or others nearby.
EJECTOR
Fig. 37 Fig. 38
Fig. 40
Fig. 41
Fig. 39
Apply oil to the ejector (Figs. 37 and 38).
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