The following listing includes the most commonly requested parts for the most commonly owned Mossberg modern-era shotguns.  This includes the current pump action 500®, 590® and 835® Ulti-Mag® as well as the discontinued 5500®, 5500MKII® and 9200® semi-autos.  We carry many more parts for each of these models than we would have room to list here. On the flip side, while we try to be sure that every item for every model listed below is currently in stock, we may sometimes be out of stock on items from time to time. Calling us at 636-937-6401 is the best way to assure that we have what you are looking for. You may also inquire by e-mail to vic@havlinsales.com. Please note that while models may be grouped here for pricing similarity and space, each model is distinctly unique and we must have the exact model number and caliber in order to fill your request, i.e., 5500® and  9200® are very different models though they may have similarly-named parts. Also note that some items may be on "special" during certain seasons of the year. 

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)

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 $46
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 aluminum cylinder potion of your action slide to determine if old style (7-5/8”) or new style (6-1/2”)

Showroom seconds, possible small blem in finish – you save over 70%. Photos are representative of available stock. 12 ga only, no perfect match, recoil pad installed.

12 ga plain birch stock with ribbed forearm, satin finish, fits 7-5/8” action slides, slight blems
Item: 12 GA Plain Wood Ribbed Set $45


Synthetic Speed-Feed® stock, 12 ga, Black or Woodland Camo, holds 2 extra shells in each side of stock $55
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 $18


Synthetic Stock:  Black, fits all 500/590/835/535 and Maverick 88, with recoil pad
ITEM: SYNSTOCK $38
Combo set black forearm 7-5/8” and stock
ITEM: COMBOSYNBLK $50

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

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) $35 close out

Model 500/835 camo synthetic Mossy Oak New Break Up stock and forearm w/recoil pad, $35 close out
Item: 500BU 12 GA stock set (for 6-1/2” action slides) $35 close out


12 ga plain stock and checkered forearm, no perfect match, fits 6-1/2” action slides
Item: 12 GA 6.5 Birch Set $45


410 bore checkered stock and forearm, no perfect match, fits 6-1/2” action slides
Item: 410 BORE 6.5 Birch Set $45



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, $35
Item: VIKING20, $35

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

835® Barrels: See CLOSE-OUT BARRELS

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

Bolt complete $55
Trigger housing complete $65
R-shell stop assembly $12*
L-shell stop assembly $12*
Top tang safety slide metal (top) $10
Top tang safety slide polymer (bottom) $6
Receiver insert $4
Operating handle $5
Trigger pin(s) $2 each
Magazine tube $24
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
Bolt Buffer Assy $14
Inertia Weight Buffer $8
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 9200® Barrels: See CLOSE-OUT BARRELS

5500® & 9200® STOCKS


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


Close-out special – beautiful hi-grade walnut checkered 9200 forearm/stock with recoil pad
ITEM:  9200WALNUTCOMBO $75 (while they last – fits 9200 only!)



Viking subdued green synthetic stock and forearm set, plastic butt plate, requires synthetic stock spacer if converting from wood.
Item: 5500/9200 Viking green set $45
Synthetic stock spacer $10 (required if converting from wood)
Side folding stock $109 (see Tactical Accessories for photo)

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