• Mossberg 50121 12 Gauge Shotgun Pump 28" 5+1 015813501217

Mossberg 50121 12 Gauge Shotgun Pump 28" 5+1 015813501217

(No reviews yet) Write a Review
Warehouse 2
Model Number::
FLEX All Purpose
12 Gauge
Barrel Length:
7.50 lbs
Choke Configuration:
Receiver Description:
Blued Steel
Chokes Included:
Barrel Description:
Vent Rib Ported
Dual Bead
Barrel Length Range:
28 to 28.99
Weight Range:
7 lbs to 7.99 lbs
Stock Finish Group:
Metal Finish Group:
Please note, when you select items to purchase from the same warehouse you will save on shipping charges. Each of our warehouses individually price their products and prices may vary by warehouse.
Firearms typically ship within 3 business days after payment and a valid FFL is received.
All of our inventory is available for online purchase only.
Flat rate shipping is only $15.95 for unlimited accessories and ammunition for Warehouse 2, 3 & 4 products. All accessories and ammunition from Warehouse 2, 3 & 4 ship within 24 hours.
Please Note: Image may not be the actual representation of the item. Please verify the item by reading the complete description before purchasing.

Mossberg 50121 500 FLEX All Purpose 12 Gauge 5+1 3" 28" Vent Rib Barrel, Matte Blued Metal Finish, Synthetic Flex Component Stock/Recoil Pad & Forend, Includes Accu-Set Chokes

The Mossberg 500 has proven to be one of the most versatile and reliable shotgun platforms available, offering a model to fit every application, and every user from our households, to law agencies, to military worldwide. The FLEX is a modular system of shotguns based on the legendary model 500 with the LTS (Tool-Less Locking System). This system consists of three convenient connecting technologies, that come together to bring another level of flexibility to your hunting and sport shooting endeavors. One locking pen is for the stock, one for the forend, and one for the recoil pad.

The All Purpose series is set up for any of your shotgun needs but easily allows you to change the stock, forend, or recoil pad for a specific need.

Gauge12 Gauge
SafetyAmbidextrous Top Tang
SightsDual Bead
Weight7.50 lbs
Weight Range7 lbs to 7.99 lbs
Barrel Length28"
Chokes IncludedF,M,IC
Stock DescriptionFixed Flex
Barrel Description28" Vent Rib
Metal Finish GroupBlued/Black
Stock Finish GroupBlack
Barrel Length Range28" to 28.99"
Choke ConfigurationAccu-Set
Receiver DescriptionBlued Steel

Returns Policy

  • We do not accept returns. All sales are final.
  • Consumers need to know all local and state laws. If purchasing a firearm, ammunition, or magazines you agree that you are 21 years of age.

Delivery Date and Manually Reviewed Orders

  • Orders placed between Monday and Friday typically ship the same day if placed before 12PM EST. If your order requires manual review the shipping date may be delayed
  • Orders that need to be manually verified are flagged by our system. Typically we flag orders for manual verification if the billing and shipping address do not match, we need an ID on file to ship the order, or if the order is from a first time customer for a large amount. We will contact you promptly to verify your order or request an ID. Please feel free to contact us in advance to verify the order. Please submit the Drivers License to us via email: FFL@VIZARDSGUNS.COM. Once you have been verified you will not need to re-verified on your future orders. We thank you for your business and assistance.

Shipping Restrictions

Alaska No ammunition
California Warehouse 2 Only-Must be shipped to an 01 FFL Dealer
No tracer ammunition
No magazines over 10 rounds
Connecticut No magazines over 10 rounds - Must have a Pistol Permit and Driver’s License
Colorado No magazines over 15 rounds
DC No magazines over 10 rounds
Hawaii No Ammunition, no magazines over 10 rounds, no Starter Pistols
Illinois Must have an Illinois Firearms Owner Identification Card and Drivers License, no shipments to Chicago
Maryland No magazines over 10 rounds
Massachusetts We ship ammunition from Warehouse 2 & 4: We will ship to your residence. We need your License To Carry and Driver’s License. No magazines over 10 rounds No Starter Pistols
New Jersey No magazines over 10 rounds. We ship ammunition to your residence
New York No magazines over 10 rounds, all ammunition must be shipped to an FFL Dealer
New York City No magazines over 10 rounds, all ammunition must be shipped to an FFL Dealer

How To Purchase a Firearm Online

Step 1:
Please verify the Firearm is legal in your state. You can do this by checking your state’s particular rules or simply ask a local gun dealer. Each state’s rules vary and some states restrict not only who may purchase and possess a handgun, but what particular models are permitted for such possession within that state.

Step 2:
If the firearm is legal in your state then you can make your purchase online.

Step 3:
Once, you have made your purchase contact your local FFL Dealer and have them Fax (603-974-2641) or email their FFL to Please have your Customer Order # (which you will find on the top right hand corner of your invoice after you purchased your firearm) and your Name on the FFL.

Step 4:
Once the FFL has been received from your dealer, your firearm will ship within 5 -7 business days.

Step 5:
Once your firearm ships you will receive an email with the tracking information and you can track your package online.
If you need any assistance please contact us at: 603-974-2639 or
Thank you for your business.

Related Products

Customers Also Viewed

  Smith & Wesson 170135 Performance Center Model 629 44 Rem Mag or 44 S&W Spl Caliber with 2.63" Stainless Finish Barrel, 6rd Capacity Stainless Finish Cylinder, Matte Silver Stainless Steel Frame & Finger Grooved Wood Grip

Smith & Wesson

Smith & Wesson 170135 Performance Center Model 629 44 Rem Mag or 44 S&W Spl Caliber with 2.63" Stainless Finish Barrel, 6rd Capacity Stainless Finish Cylinder, Matte Silver Stainless Steel Frame & Finger Grooved Wood Grip

Smith & Wesson's Performance Center combines old world hand craftsmanship with modern technology.The Model 629 features a chorme hammer trigger and trigger stop. It also has a PC tuned actoin...

Now: $1,279.99
Was: $1,299.99
REM 870 FIELD 20/28/3 WALNUT


REM 870 FIELD 20/28/3 WALNUT

If the Model 870 were introduced today" it would be hailed as a major advance in pump-action shotgun design - the ultimate in strength" durability" silky-smooth bind-free action" and sleek classical...