FN FN20-100378 10rd Magazine for FN 509C (FDE Pinky Ext. Baseplate) (Pkg 1)
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FN replacement magazine, SKU FN20-100378, 10-round capacity for FN 509C (listed as ‘MAGAZINE FN 509C 9MM 10RD FDE’), packaged quantity 1; features FDE pinky extension baseplate. Order when you need individual FN 509C magazines with FDE extension.
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Description
Description
Product Overview
FN FN20-100378 is recorded under Handgun Magazines / Accessories and shows as a 10-round magazine for the FN 509C (catalog line: MAGAZINE FN 509C 9MM 10RD FDE). Package quantity is 1 and SKU is FN20-100378.
Why This Product
This entry identifies the magazine as an FN-branded accessory intended for FN 509C (per the product full title). The listing records a specific baseplate option—FDE Pinky Ext. Baseplate—and single-unit packaging, which matter for stocking, accessory selection, and consumer preferences for magazine extensions.
Key Verified Specifications
- Brand: FN (product-270494:f002, product-270494:f006)
- Model / SKU: FN20-100378 (product-270494:f012)
- Category: Handgun Magazines / Accessories (product-270494:f005, product-270494:f003)
- Package quantity: 1 (product-270494:f008, product-270494:f010)
- Noted feature: FDE Pinky Ext. Baseplate (product-270494:f009)
- Catalog text: MAGAZINE FN 509C 9MM 10RD FDE (source: existing_copy full)
- Availability status: instock (product-270494:f013)
Appropriate Use Cases
- Replacement or spare 10-round magazine procurement for FN 509C pistols where a flat dark earth (FDE) pinky extension baseplate is required (source: product-270494:f009 and existing title).
- Accessory inventory for armory or retail where magazines are ordered singly for resale or accessory bundling (product-270494:f008).
What Customers Should Know
- The record identifies this as a magazine for FN 509C in the catalog title; verify model-level compatibility and capacity requirements against your firearm records before ordering (product-270494:f012 and existing copy).
- Package quantity is one—confirm order quantity if you require multiple magazines for inventory (product-270494:f008).
- Confirm finish and baseplate style (FDE pinky extension) meet your customer or regulatory needs prior to purchase (product-270494:f009).
Specifications
- Short Stroke Gas Piston Gas System (Rifle Length)
- 18.6″ Barrel Length ( Mid-Weight style, non-fluted)
- 1:8 Twist Rate Rifling

