Skip to main content
We may get paid by partner for deals, including promoted items

Menu

Trending
Top Brands Palmetto State ArmoryHot Yeti CoolerDeal NatchezDeal SitkaDeal 5.11Sale Winter Clearance Amazon Pickleball Sale Amazon FitnessHot Stores
SIG SAUER SIG SAUER P365 X-MACRO EXTENDED MAGAZINE by Sig Sauer -
15% off

Product Description

21-round extended magazines for the P365 X-MACRO series of handguns manufactured by Sig Sauer. The magazines feature a steel body with an extended grip base for additional capacity and grip space. These magazines are compatible with common 9mm Luger ammunition.

SIG SAUER SIG SAUER P365 X-MACRO EXTENDED MAGAZINE

at Guns.com
Browse all Guns.com deals
$54.39 $63.99 15% Discount
You save $9.60
In Stock at Guns.com
Price verified 2d ago
Buy Now at Guns.com
Secure checkout Easy returns
or compare prices
Amazon logo Amazon eBay logo eBay

Product Details

Brand Sig Sauer
MPN 500353
Magazines Sig Sauer

Shop more Sig Sauer Magazines

All 1,103 in-stock Sig Sauer Magazines from 30 stores →

More from Sig Sauer

Ammunition Depot
Last Updated:
Oct 26, 2026 06:45 AM
Sig Sauer P238 380 ACP LEGION Magazine - 7 Round Sig Sauer P238 380 ACP LEGION Magazine - 7 Round View Details
$46.99
Buy Now · $46.99
Ammunition Depot
Ammunition Depot
Last Updated:
Oct 26, 2026 06:45 AM
Sig Sauer Factory P239 .357 SIG 7 Round Magazine Sig Sauer Factory P239 .357 SIG 7 Round Magazine View Details
$45.99
Buy Now · $45.99
Ammunition Depot
Ammunition Depot
Last Updated:
Oct 26, 2026 06:45 AM
Sig Sauer Factory P938 9mm 7 Round Magazine Extended Grip Sig Sauer Factory P938 9mm 7 Round Magazine Extended Grip View Details
$46.49
Buy Now · $46.49
Ammunition Depot
Ammunition Depot
Last Updated:
Oct 26, 2026 06:45 AM
Sig Sauer Factory P220 .45 ACP 10 Round Extended Magazine Sig Sauer Factory P220 .45 ACP 10 Round Extended Magazine View Details
$46.99
Buy Now · $46.99
Ammunition Depot
Ammunition Depot
Last Updated:
Oct 26, 2026 06:45 AM
Sig Sauer OEM P229-1 9mm Magazine - 10 Round (Steel) Sig Sauer OEM P229-1 9mm Magazine - 10 Round (Steel) View Details
$45.49
Buy Now · $45.49
Ammunition Depot
Ammunition Depot
Last Updated:
Oct 26, 2026 06:45 AM
Sig Sauer Factory P238 .380 ACP 7 Round Magazine Extended Grip Sig Sauer Factory P238 .380 ACP 7 Round Magazine Extended Grip View Details
$48.99
Buy Now · $48.99
Ammunition Depot
Ammunition Depot
Last Updated:
Oct 26, 2026 06:45 AM
Sig Sauer P322 22 LR Magazine - 25 Round (Polymer) Sig Sauer P322 22 LR Magazine - 25 Round (Polymer) View Details
$38.49
Buy Now · $38.49
Ammunition Depot
Ammunition Depot
Last Updated:
Oct 26, 2026 06:45 AM
Sig Sauer Factory 1911 .45 ACP 8 Round Magazine Sig Sauer Factory 1911 .45 ACP 8 Round Magazine View Details
$31.99
Buy Now · $31.99
Ammunition Depot
Ammunition Depot
Last Updated:
Oct 26, 2026 06:45 AM
Sig Sauer 1911 Xseries 45 Auto 8rd Black Steel Sig Sauer 1911 Xseries 45 Auto 8rd Black Steel View Details
$31.99
Buy Now · $31.99
Ammunition Depot
Ammunition Depot
Last Updated:
Oct 26, 2026 06:45 AM
Sig Sauer 1911 9mm Magazine - 8 Round Sig Sauer 1911 9mm Magazine - 8 Round View Details
$27.99
Buy Now · $27.99
Ammunition Depot
Ammunition Depot
Last Updated:
Oct 26, 2026 06:45 AM
Sig Sauer P365-Axg Legion 9mm OEM Magazine - 17 Rounds (Steel) Sig Sauer P365-Axg Legion 9mm OEM Magazine - 17 Rounds (Steel) View Details
$51.99
Buy Now · $51.99
Ammunition Depot
Ammunition Depot
Last Updated:
Oct 26, 2026 06:45 AM
Sig Sauer P322 22 LR Magazine - 20 Round (Polymer) Sig Sauer P322 22 LR Magazine - 20 Round (Polymer) View Details
$28.99
Buy Now · $28.99
Ammunition Depot
Ammunition Depot
Last Updated:
Oct 26, 2026 06:45 AM
Sig Sauer Factory P229 .40 S&W / .357 SIG 12 Round Magazine Sig Sauer Factory P229 .40 S&W / .357 SIG 12 Round Magazine View Details
$47.49
Buy Now · $47.49
Ammunition Depot
Ammunition Depot
Last Updated:
Oct 26, 2026 06:45 AM
Sig Sauer P225A 9mm 8 Round Magazine Sig Sauer P225A 9mm 8 Round Magazine View Details
$45.49
Buy Now · $45.49
Ammunition Depot
Ammunition Depot
Last Updated:
Oct 26, 2026 06:45 AM
Sig Sauer P365XMACRO 21rd 9mm Magazine FDE Sig Sauer P365XMACRO 21rd 9mm Magazine FDE View Details
$57.99
Buy Now · $57.99
Ammunition Depot
Ammunition Depot
Last Updated:
Oct 26, 2026 06:45 AM
Sig Sauer P365 9mm OEM Magazine - 21 Round (Black/Polymer) Sig Sauer P365 9mm OEM Magazine - 21 Round (Black/Polymer) View Details
$57.99
Buy Now · $57.99
Ammunition Depot
Ammunition Depot
Last Updated:
Oct 26, 2026 06:45 AM
Sig Sauer OEM Sig P250/P320 9mm Magazine - 30 Round (Blue Steel) Sig Sauer OEM Sig P250/P320 9mm Magazine - 30 Round (Blue Steel) View Details
$59.99
Buy Now · $59.99
Ammunition Depot
Ammunition Depot
Last Updated:
Oct 26, 2026 06:45 AM
Sig Sauer Factory MPX 9mm Gen 2 10 Round Magazine Sig Sauer Factory MPX 9mm Gen 2 10 Round Magazine View Details
$59.99
Buy Now · $59.99
Ammunition Depot
Ammunition Depot
Last Updated:
Oct 26, 2026 06:45 AM
Sig Sauer Factory P320 / P250 9mm 12 Round Subcompact Magazine Sig Sauer Factory P320 / P250 9mm 12 Round Subcompact Magazine View Details
$54.49
Buy Now · $54.49
Ammunition Depot
Ammunition Depot
Last Updated:
Oct 26, 2026 06:45 AM
Sig Sauer Factory P250 / P320 Sub-Compact .380 ACP 12 Round Magazine Sig Sauer Factory P250 / P320 Sub-Compact .380 ACP 12 Round Magazine View Details
$67.99
Buy Now · $67.99
Ammunition Depot