Skip to main content
HalloweenPetLawn & GardenTruck & AutomotiveSporting GoodsHorseFarm & RanchClothingLivestockPet & Animal PharmacyToolsPoultryFencing & GatesHome ImprovementOutdoor LivingHeating & CoolingHome Decor & FurnitureOutdoor Power EquipmentTrailers & TowingBoots & ShoesWild Birds & WildlifeToysGift CardsServices Propane RefillTrailer RentalGarden CenterFeed CenterSame Day DeliveryPetVet ClinicPet WashGrooming at PetsenseDog Training at PetsenseTractor Supply RxPet InsuranceWag!

"Savings and Offers"

Weekly AdSaleClearance

"More Options"

Weekly AdWhat's NewTractor Supply AppEarn Rewards with Neighbor's ClubHometown HeroesLife Out Here BlogTSC Exclusive BrandsTop BrandsClearance ItemsBattery FinderOutdoor Power Equipment Parts FinderHitch Finder

Spend $49.99 to unlock Free Delivery on most orders

|
Learn More
Order statusTSC Credit CardsWhat’s newPetsenseWeekly Ad
​
Sign In / EnrollGet rewarded!
​
Halloween
Pet
Lawn & Garden
Truck & Automotive
Sporting Goods
Horse
Farm & Ranch
Clothing
Livestock
Pet & Animal Pharmacy
Tools
Poultry
Fencing & Gates
Home Improvement
Outdoor Living
Heating & Cooling
Menu

Search

Home

Sign In

Cart
0.0
(0)
0.0 out of 5 stars.
A woman outside with a dog
A woman outside with a dog
  1. Home
  2. /
  3. Sporting Goods
  4. /
  5. Shooting
  6. /
  7. Shooting Accessories & Parts
  8. /
  9. Gun Parts
  10. /

  11. ProMag Standard 21 Round 9mm Luger Magazine for Sig P320, Blued, Steel

  1. Home
  2. /
  4. /
  5. Gun Parts

ProMag Standard 21 Round 9mm Luger Magazine for Sig P320, Blued, Steel

Shop all ProMag

  • New Arrival

  • Online Only

ProMag Standard 21 Round 9mm Luger Magazine for Sig P320, Blued, Steel

Item # 6118458

ProMag ProMag Standard 21 Round 9mm Luger Magazine for Sig P320, Blued, Steel
ProMag ProMag Standard 21 Round 9mm Luger Magazine for Sig P320, Blued, Steel
$25.99

Spend $49.99 to unlock free delivery!

Notice:
This Item cannot be shipped to CA, CO, CT, DE, DC, HI, IL, MD, MA, NJ, NY, OR, RI, VT, WA.
Neighbor's Club logo
Neighbor’s Club Members earn points with purchases.

Sign in or Join Now

Shop all ProMag

  • New Arrival

  • Online Only

ProMag Standard 21 Round 9mm Luger Magazine for Sig P320, Blued, Steel

Item # 6118458

ProMag ProMag Standard 21 Round 9mm Luger Magazine for Sig P320, Blued, Steel
ProMag ProMag Standard 21 Round 9mm Luger Magazine for Sig P320, Blued, Steel

$25.99

Spend $49.99 to unlock free delivery!

This item is available online only

Delivery to

Free standard delivery on online footwear & Clothing purchases of $49 and over.

​
Notice:
This Item cannot be shipped to CA, CO, CT, DE, DC, HI, IL, MD, MA, NJ, NY, OR, RI, VT, WA.
Neighbor's Club logo
Neighbor’s Club Members earn points with purchases.

Sign in or Join Now

This replacement or spare magazine is compatible with your Sig Sauer P320. It is constructed of heat treated steel with injection molded mag follower and mag spring formed from chrome silicone wire. Made in the USA.

  • Compatible with Sig Sauer P320
  • Replacement/spare magazine
  • Made with heat-treated steel
  • Includes an injection-molded magazine follower
  • Magazine spring is formed from chrome silicone wire
  • Made in the USA
  • Firearm Fitment: Sig P320
  • Caliber: 9mm Luger
  • Capacity: 21rd
  • Color: Blued
  • Material: Steel
  • Max Capacity: 21
BrandProMag
Country of OriginMade in USA
CompatibilitySig P320
Primary ColorBlue
Manufacturer Part NumberSIGA20
No questions have been asked about this product.

No questions have been asked about this product.

Q&As

No questions have been asked about this product.

No questions have been asked about this product.

Similar Items

  1. ProMag Standard 32 Round 9mm Luger Magazine for Sig P320, Blued, Steel
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    ProMag Standard 32 Round 9mm Luger Magazine for Sig P320, Blued, Steel
  2. ProMag Standard 17 Round 9mm Luger Magazine for Sig P320, Blued, Steel
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    ProMag Standard 17 Round 9mm Luger Magazine for Sig P320, Blued, Steel

    $23.99
  3. ProMag Compact 15 Round 9mm Magazine for Sig P320, Blued, Steel
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    ProMag Compact 15 Round 9mm Magazine for Sig P320, Blued, Steel
  4. ProMag Standard 10 Round 9mm Luger Magazine for Sig P290, Blued, Steel
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    ProMag Standard 10 Round 9mm Luger Magazine for Sig P290, Blued, Steel

    $27.99
  5. ProMag Standard 6 Round 9mm Luger Magazine for Sig P290, Blued, Steel
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    ProMag Standard 6 Round 9mm Luger Magazine for Sig P290, Blued, Steel

    $22.99
  6. SIG Sauer 10 Round 9mm Luger Magazine for Sig P250/Sig P320, Blued, Steel
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    SIG Sauer 10 Round 9mm Luger Magazine for Sig P250/Sig P320, Blued, Steel

    $56.99
  7. ProMag Standard 6 Round 9mm Luger Magazine for Sig P938, Blued, Steel
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    ProMag Standard 6 Round 9mm Luger Magazine for Sig P938, Blued, Steel

    $22.99
  8. ProMag Standard 10 Round 9mm Luger Magazine for Sig P938, Blued, Steel
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    ProMag Standard 10 Round 9mm Luger Magazine for Sig P938, Blued, Steel

    $27.99
  9. ProMag Standard 15 Round 9mm Luger Magazine for Sig P226, Blued, Steel
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    ProMag Standard 15 Round 9mm Luger Magazine for Sig P226, Blued, Steel

    $24.99
  10. ProMag Standard 32 Round 9mm Luger Magazine for S&W M&P, Blued, Steel
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    ProMag Standard 32 Round 9mm Luger Magazine for S&W M&P, Blued, Steel

    $33.99
  11. ProMag Standard 32 Round 9mm Luger Magazine for Sig P226, Extended, Blued, Steel
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    ProMag Standard 32 Round 9mm Luger Magazine for Sig P226, Extended, Blued, Steel

    $27.99
  12. SIG Sauer 17 Round 9mm Luger Magazine for Sig P250/Sig P320, Blued, Steel
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    SIG Sauer 17 Round 9mm Luger Magazine for Sig P250/Sig P320, Blued, Steel

    $56.99

Items You May Like

  1. Safariland OWB Holster for Glock 19/23, Right Hand, Thermoplastic
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Safariland OWB Holster for Glock 19/23, Right Hand, Thermoplastic
  2. Tyrant CNC Magwell for Glock 19 Gen 3-4 Black 7000 Series, Aluminum
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Tyrant CNC Magwell for Glock 19 Gen 3-4 Black 7000 Series, Aluminum
  3. Bulldog Rapid Release OWB Holster for Glock 19/23/32, Right Hand, Black, Polymer
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Bulldog Rapid Release OWB Holster for Glock 19/23/32, Right Hand, Black, Polymer
  4. Pachmayr Diamond Pro Grip for Taurus Compact Public Defender, Diamond Checkering, Black, Rubber with Finger Grooves
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Pachmayr Diamond Pro Grip for Taurus Compact Public Defender, Diamond Checkering, Black, Rubber with Finger Grooves

    $31.99
  5. Safariland ALS Holster for Glock 19 MOS Gen 3-4, Compatible with TLR-7, Right Hand, Black, 6360RDS28327131
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Safariland ALS Holster for Glock 19 MOS Gen 3-4, Compatible with TLR-7, Right Hand, Black, 6360RDS28327131

    $189.99
  6. Desantis Gunhide Uni-Tuk IWB Holster for Glock 19/19X/19 Gen5/23/32/45, Right Hand, Black, Kydex
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Desantis Gunhide Uni-Tuk IWB Holster for Glock 19/19X/19 Gen5/23/32/45, Right Hand, Black, Kydex

    $73.99
  7. Desantis Gunhide Just Cause 2.0 Black Kydex IWB Holster for Glock 17,19,22,23,31,32; 17 Gen5; 19 Gen5, 19x,45, Right Hand
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Desantis Gunhide Just Cause 2.0 Black Kydex IWB Holster for Glock 17,19,22,23,31,32; 17 Gen5; 19 Gen5, 19x,45, Right Hand

    $72.99
  8. ProMag Standard 15 Round 40 S&W Magazine for Ruger SR, Blued, Steel
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    ProMag Standard 15 Round 40 S&W Magazine for Ruger SR, Blued, Steel
  9. SIG Sauer 20 Round 9mm Luger Magazine for Sig P226 X5, Extended, Black, Steel
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    SIG Sauer 20 Round 9mm Luger Magazine for Sig P226 X5, Extended, Black, Steel
  10. Safariland ALS Holster for Glock 17 MOS Gen5, Compatible with SureFire X300U, Right Hand, Black
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Safariland ALS Holster for Glock 17 MOS Gen5, Compatible with SureFire X300U, Right Hand, Black

    $157.99
  11. Blackhawk Serpa CQC OWB Holster for Glock 19/23/32/36/45, Left Hand, Matte Black, Polymer, Size 02
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Blackhawk Serpa CQC OWB Holster for Glock 19/23/32/36/45, Left Hand, Matte Black, Polymer, Size 02

    $45.99
  12. Talon Adhesive Grip for Glock 19 Gen5/23 Gen5/25 Gen5/32 Gen5/38 Gen5/44 Gen5, Black, Textured Rubber
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Talon Adhesive Grip for Glock 19 Gen5/23 Gen5/25 Gen5/32 Gen5/38 Gen5/44 Gen5, Black, Textured Rubber

    $24.99

Customers Also Bought

  1. SIG Sauer 10 Round 9mm Luger Magazine for Sig P250 Compact/Sig P320 Compact, Blued, Steel
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    SIG Sauer 10 Round 9mm Luger Magazine for Sig P250 Compact/Sig P320 Compact, Blued, Steel

    $56.99
  2. SIG Sauer 15 Round 9mm Luger Magazine for Sig P250 Compact/Sig P320 Compact, Blued, Steel
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    SIG Sauer 15 Round 9mm Luger Magazine for Sig P250 Compact/Sig P320 Compact, Blued, Steel

    $56.99
  3. SIG Sauer 12 Round 9mm Luger Magazine for Sig P320 Subcompact/Sig P250 SubCompact, Blued, Steel
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    SIG Sauer 12 Round 9mm Luger Magazine for Sig P320 Subcompact/Sig P250 SubCompact, Blued, Steel

    $56.99
  4. SIG Sauer 21 Round 9mm Luger Magazine for Sig P250/P320/P320X Five, Extended, Blued, Steel
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    SIG Sauer 21 Round 9mm Luger Magazine for Sig P250/P320/P320X Five, Extended, Blued, Steel

    $56.99
  5. SIG Sauer 14 Round 40 S&W/357 Sig Magazine for Sig P250/Sig P320, Blued, Steel
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    SIG Sauer 14 Round 40 S&W/357 Sig Magazine for Sig P250/Sig P320, Blued, Steel

    $56.99
  6. SIG Sauer 21 Round 9mm Luger Magazine for Sig P320/M17/M18, Extended, Black/Coyote, Steel
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    SIG Sauer 21 Round 9mm Luger Magazine for Sig P320/M17/M18, Extended, Black/Coyote, Steel

    $56.99
  7. SIG Sauer 10 Round 9mm Luger Magazine for Sig P320 Legion, Blued, Steel
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    SIG Sauer 10 Round 9mm Luger Magazine for Sig P320 Legion, Blued, Steel

    $63.99
  8. SIG Sauer 17 Round 9mm Luger Magazine for Sig P320 Legion, Blued, Steel
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    SIG Sauer 17 Round 9mm Luger Magazine for Sig P320 Legion, Blued, Steel
  9. SIG Sauer 10 Round 40 S&W/357 Sig Magazine for Sig P250/Sig P320, Blued, Steel
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    SIG Sauer 10 Round 40 S&W/357 Sig Magazine for Sig P250/Sig P320, Blued, Steel

    $56.99
  10. SIG Sauer 10 Round 45 ACP Magazine for Sig P250/Sig P320, Blued, Steel
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    SIG Sauer 10 Round 45 ACP Magazine for Sig P250/Sig P320, Blued, Steel

    $56.99
  11. ProMag Standard 17 Round 9mm Luger Magazine for H&K VP9, Blued, Steel
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    ProMag Standard 17 Round 9mm Luger Magazine for H&K VP9, Blued, Steel

    $23.99
  12. ProMag Standard 17 Round 9mm Luger Magazine for S&W SD, Blued, Steel
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    ProMag Standard 17 Round 9mm Luger Magazine for S&W SD, Blued, Steel

    $23.99

Reviews

Review this Product

Select to rate the item with 1 star. This action will open submission form.
Select to rate the item with 2 stars. This action will open submission form.
Select to rate the item with 3 stars. This action will open submission form.
Select to rate the item with 4 stars. This action will open submission form.
Select to rate the item with 5 stars. This action will open submission form.
Be the first to review this product
Get the top deals, latest trends and more
Sign up for emails from Tractor Supply today.
First Name*
Last Name*
Email*

Customer Support

  • Order Status

  • Return Policy

  • Delivery Options

  • Tax Exemptions

  • Frequently Asked Questions

  • Contact Us

  • Recall Notices

  • Call:  

    (877) 718-6750

  • Mon - Sat: 7am - 9pm CT

  • Sun: 8am - 7pm CT

  • Closed Christmas Day

About Us

  • Who We Are

  • Investor Relations

  • Stewardship

  • Community

  • Military Support

  • Product Catalog

  • Tractor Supply Stores

  • .Pharmacy Verified Website

Work With Us

  • Careers

  • Sponsorship

  • Affiliate Program

  • Potential Vendor Partners

  • Vendor Information

  • Tractor Supply Media Network

Neighbor's Club

  • About

  • Rewards

  • Hometown Heroes

  • Frequently Asked Questions

  • Terms & Conditions

Credit Center

  • TSC Credit Card

  • Klarna

Stay Connected

Connect & Share with the Tractor Supply Community.

Tractor Supply App

Shop on the go with the Tractor Supply App

Learn More

Stay Connected

Connect & Share with the Tractor Supply Community.

Tractor Supply App

Shop on the go with the Tractor Supply App

Learn More
  • Order Status

  • Return Policy

  • Delivery Options

  • Tax Exemptions

  • Frequently Asked Questions

  • Contact Us

  • Recall Notices

  • Call:  (877) 718-6750

  • Mon - Sat: 7am - 9pm CT

  • Sun: 8am - 7pm CT

  • Closed Christmas Day

  • Who We Are

  • Investor Relations

  • Stewardship

  • Community

  • Military Support

  • Product Catalog

  • Tractor Supply Stores

  • .Pharmacy Verified Website

  • Careers

  • Sponsorship

  • Affiliate Program

  • Potential Vendor Partners

  • Vendor Information

  • Tractor Supply Media Network

  • About

  • Rewards

  • Hometown Heroes

  • Frequently Asked Questions

  • Terms & Conditions

  • TSC Credit Card

  • Klarna

Connect & Share with the Tractor Supply Community.

Shop on the go with the Tractor Supply App

Learn More
  • Privacy policy
  • Your Privacy Choices
  • Terms and Conditions
  • California Transparency Act
  • Legal Notices
  • Accessibility
  • Responsible Disclosure Statement
  • Surprise (Balance) Medical Billing Disclosure
  • Transparency in Coverage
  • Human Rights Policy
  • Vendor Code of Conduct
  • California Notice of Collection
  • Privacy Requests

© 2026, Tractor Supply Co. All Rights Reserved.