ProMag Sig Sauer P320 9mm 21 Round Steel Magazine
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ProMag Sig Sauer P320 9mm 21 Round Steel Magazine

Code: SIG-A20
Ratings Snapshot
4.5
out of 5
5 (2)
4 (2)
3 (0)
2 (0)
1 (0)
Would recommend this product.
75%

$23.99

In Stock
Qty

This magazine is restricted in some areas. Please check your State, County and City laws for restrictions before ordering.

  • Please click on the "Important Information" tab, where you can find out more information regarding magazine restrictions.

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Product Description

•••••

Description: ProMag Sig Sauer P320 9mm 21 Round Steel Magazine. Showcasing a black oxide finish on heat treated steel construction, this ProMag magazine is for the Sig Sauer P320 pistol platforms chambered in 9mm. This mag holds 21 rounds, has an injection molded polymer mag follower, a heat treated chrome silicone wire mag spring, and is proudly made in the USA. Increase your operation time while on the range or plinking with friends with this ProMag magazine.

Features:

  • 21-round magazine
  • Fits Sig Sauer P320 9mm pistol
  • Magazine body constructed of heat treated steel with black oxide finish
  • Injection molded magazine follower
  • Magazine spring formed from heat treated chrome silicone wire 
  • Made in USA

Manufacturer: Promag

Note: It is the responsibility of the purchaser to check your local laws before ordering products from MidwestgunWorks.com. Please check your State, County and City laws for restrictions before ordering. Please click on the "Important Information" tab, where you will find information regarding magazine restrictions.

PRODUCT SPECIFICATIONS:

  • Brand: Promag
  • Finish / Color: Black
  • Firearm Type: Pistol
  • Magazine Capacity: 21
  • Caliber: 9mm
  • Material: Steel
  • Models Fit: Sig Sauer P320

Specifications

•••••
  • Brand: ProMag
  • Caliber: 9mm
  • Finish / Color: Black
  • Firearm Type: Pistol
  • Magazine Capacity: 21
  • Material: Steel
  • Models Fit: Sig Sauer P320

Rules & Regulations

•••••

Magazine Restrictions

Midwest Gun Works DOES NOT ship high capacity magazines to the states listed below.

Midwest Gun Works DOES NOT offer refunds in place of the magazines.

It is the customer's responsibility for understanding state and local laws regarding magazine capacities.

Customers ordering magazines that are illegal to own in their state will have their orders cancelled and will be charged a 5% restocking fee.

States with applied magazine restrictions:
  • California - no magazines greater than 10 rounds
  • Colorado - no magazines greater than 15 rounds
  • Connecticut - no magazines greater than 10 rounds (larger with a valid permit.)
  • Delaware - no magazines greater than 17 rounds.
  • Hawaii - no pistol magazines greater than 10 rounds
  • Illinois -
    • No pistol magazines greater than 15 rounds
    • No rifle magazines greater than 10 rounds
    • Chicago, Highland Park, Cook County, Dolton, Homewood & Oak Park- no magazines greater than 10 rounds
  • Maryland - no magazines greater than 10 rounds
  • Massachusetts - no pistol or rifle magazines over 10 rounds and no detachable shotgun magazines over 5 rounds
  • New Jersey - no magazines greater than 10 rounds
  • New York - no pistol or rifle magazines over 10 rounds and no detachable shotgun magazines over 5 rounds
  • Rhode Island - no magazines greater than 10 rounds
  • Vermont - no pistol magazines over 15 rounds and no rifle or shotgun magazines over 10 rounds
  • Washington -
    • No magazines greater than 10 rounds
    • No semi-auto shotgun fixed magazine greater than 7 rounds
  • Washington D.C. - no magazines greater than 10 rounds

Exceptions:

  • L.E.O. must provide both their credentials and a letterhead signed by their department's superior officer stating that the magazine/weapon will either be used in the execution of the L.E.O.'s duties, or off duty
    • o Midwest Gun Works only recognizes City Police Officers, County Sheriff Deputies, and State Police (including Highway Patrol) as L.E.O.'s.

Midwest Gun Works will not disassemble magazines to be sold as magazine parts.

Close

Customer Ratings & Reviews

•••••
4
Ratings Snapshot
4.5
out of 5
5 (2)
4 (2)
3 (0)
2 (0)
1 (0)
Would recommend this product.
75%
4.5
out of 5
5 (2)
4 (2)
3 (0)
2 (0)
1 (0)
Would recommend this product.
75%
4 Total Reviews
P320 21 round mag
4 out of 5
Chris
Location: Philadelphia
Date: September 28, 2022
Build quality is good. Not Sig good but good and rounds cycle without any hiccups so far. I got it for range usage so that my factory mags don’t receive to much strain but i am surprised at how well its been so far. I would definitely buy again.
Recommended
P320 21round mag
4 out of 5
Jerry
Location: Lawton, Ok
Date: January 13, 2022
works surprising well...can't tell any difference once installed.
Recommended
Great mags
5 out of 5
Barnacle Boy
Location: VA
Date: December 27, 2021
Much cheaper than the SIG ones, but just as good. Good feed A+.
p320 21 round mag's
5 out of 5
Basslane
Location: Rock Hill, SC
Date: June 17, 2021
They are not perfect does not lock open on last round but you can fire 21 rounds till then. Nice item I like it, and its not $50. or more a mag.
Recommended
4 Total Reviews