Mossberg® Modern Shotgun Parts

PLEASE NOTE that in our travels when buying out gun shops and other stores, we run across items that are technically new but are scratched or have blemished finishes.  This is particularly true of stocks, barrels, chokes, etc, with "showroom wear."  We always indicate these as seconds, blems or "as new" condition items.  Be sure to check the WEB SPECIALS page to enjoy additional savings. Also note the CLOSE-OUT BARRELS page, and two new sections we have added:

TACTICAL ACCESSORIES
REMINGTON® 870™ ACCESSORIES

Depending on the item, fitting may be required by a qualified gunsmith to insure proper function and safety.

500® – 12 ga., 16 ga., 20 ga., .410 bore (must have serial number for some parts)
590® - 12 ga only
Bolt slide $16 (must send in old bolt for matching)
Bolt complete $45 (must send in old bolt for matching)
Extractors R or L, $6; Pins $1, Springs $1
Ejectors $8; Ejector Screw $3
Elevator $14
Cartridge Stop $8
Cartridge Interruptor $8
Firing Pins $14 (new style); $14 (old style)
Trigger Housing Pins $2
Action slide 6-1/2” tube $28
Action slide 7-5/8” tube $48
Slide nut $12

Top tang safety slide metal (top) $10
Top tang safety slide polymer (bottom) $6

500® & 835® Stocks


Comparison of action slide lengths: top 7-5/8”, bottom 6-1/2” Measure from top of threads to bottom of collar that holds the action bars. This measurement is critical to fit when ordering forearms or stock sets that include a forearm. For the most part, 20-year and older sporting shotguns and new tactical shotguns use the 7-5/8” slide. New sporting models have used the 6-1/2” slide for almost 20 years. There are exceptions, however. To be sure, measure!  NOTE:  Since 2006, most new 500®, 535® and 835® sporting shotguns with synthetic forearms may not use an action slide tube at all; rather, the pump handle will have two integral bars pinned into the handle itself.  If you have one of these, you cannot use a forearm that was designed to go over an action slide tube without first buying the correct length tube and action slide tube nut.

Old Style Stocks and Forearms for K850XXX serial number or older – action slide length 7-5/8”

Stocks and forearms for 500® 12 ga will also fit 835® Ulti-Mag® 12 ga. Measure the cylinder potion of your action slide to determine if old style (7-5/8”) or new style (6-1/2”)


Synthetic Speed-Feed® stock, 12 ga, Black or Woodland Camo, holds 2 extra shells in each side of stock $60
Item: Speed-Feed Stock . specify Black or Woodland Camo


Synthetic Forearm, Black, old style sporting or tactical, for action slides 7-5/8”
Item: SYNFRM $22


Synthetic Stock:  Black, fits all 500/590/835/535 and Maverick 88, with recoil pad
ITEM: SYNSTOCK $42
Combo sets black forearm 7-5/8” and stock with plain stock or Speed Feed Stock
ITEM: COMBOSYNBLK $55 (with plain black stock)
ITEM: COMBOSYNSPDFD $75 (with Speed Feed stock black)

Deluxe Walnut Dual-Comb stock and forearm with high and low-comb, satin gloss finish, checkering and quality Kick-Eez recoil pad.  Forearm fits 7-5/8” action slides. Nice – order now before they are gone!
ITEM:  DUALCOMB (12 GA only) $95


20 ga long action wood forearm, ribbed, birch, fits action slides of 7-5/8". No matching stocks
ITEM WOOD20RIB $10

New Style Stocks and Forearms for K850xxx serial number or higher – action slide length 6-1/2”


Model 500/835 camo synthetic Forest Floor stock and forearm w/ recoil pad
Item: 500FF 12 GA stock set (for 6-1/2” action slides) $45 close out

Note: we have a limited number of 12 and 20 ga wood stocks, slight blems, stocks only, no matching forearm, no color match possible, recoil pad included for $35 each.

Item: STOCKWOOD12: $35          Item: STOCKWOOD20: $35


Viking subdued green synthetic 20 ga. stock and forearm set in 12 or 20 ga, recoil pad installed. Fits 6-1/2” action slides. 20 ga butt will fit 12 ga receiver with slight lip.
Item: VIKING12, $45
Item: VIKING20, $45

NOTE:  See Gunsmith Specials for Grab bag close outs of “as-is” stocks, forearms and accessories.

500®Barrels: See CLOSE-OUT BARRELS

835® 12 ga. "Ulti-Mag"® Model

Bolt $45
Bolt slide $16
Elevator $18
Ejector $8; Ejector screw $3
Top tang safety slide metal (top) $10
Top tang safety slide polymer (bottom) $6

835® STOCKS
Note: See Model 500® and 835® stock listings above

5500® and 9200® semi –auto 12 ga. models

Bolt complete $55
Trigger housing complete $65
R-shell stop assembly $12* (5500 only)
L-shell stop assembly $12* (5500 only)
Top tang safety slide metal (top) $10
Top tang safety slide polymer (bottom) $6
Receiver insert $4
Operating handle $6
Trigger pin(s) $2 each
Magazine tube $24 (used only)
Magazine spring $6
Follower $2
Inertia weight complete $25
Inner piston ring $4
Outer piston ring $4
Outer seal ring $4
O-ring $2
Action bar retainer (for inertia weight) $2
Forend cap detent $2
Inertia Weight Buffer $8
Bolt buffer assy $14 *(not always in stock)
Action Spring $6
Magazine spring retainer $2
Recoil spring $4 (5500 MKII Only)
Recoil spring washer $2 (5500 MKII Only)
Magazine extension 7-shot, blue or parkerized $49
Magazine extension 8-shot, blue or parkerized, $59
Magazine extension 9-shot blue or parkerized, $69
5500® and 5500 MKII Barrels: See CLOSE-OUT BARRELS
New! See Tactical Accessories for Shotgun Scopes, Mono and Tri-rails, picatinny systems, folding and collapsible stocks, pistol grip forends and more

Pachmayr Slip- On recoil pads

Use for shotguns missing a factory recoil pad or to add ¾" LOP to factory set up. Easy to install in shop or at the range. Medium fits many other brands as well as Mossberg



ITEM: PAD4433 $16.00 (for use on stocks without a recoil pad)



ITEM: PAD4413 $26.50 (for use on stocks with or without a recoil pad)


5500® & 9200® STOCKS


Wood checkered buttstock, minor blem, $35
Item: 5500/9200 Wood stock only, no forearms




Viking subdued green synthetic stock and forearm set, requires synthetic stock spacer if converting from wood.
Item: 5500/9200 Viking green set $35 [close out price – no buttplate]
Synthetic stock spacer $10 (required if converting from wood)

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