Is $20.99 a good price for FAB Defense Glock 42 Polymer Magazine Extension, Black - FX4210B?

At $20.99, this is near the average price of $20.99. Fair price — consider waiting for a drop. The average price is $20.99. The lowest we've tracked is $20.99. Tracked for 89 days. Last PSA verification: 2026-04-13. Recorded 0 price changes.

What is the lowest price for FAB Defense Glock 42 Polymer Magazine Extension, Black - FX4210B?

The lowest price we've tracked for FAB Defense Glock 42 Polymer Magazine Extension, Black - FX4210B is $20.99. The highest was $20.99. The current price of $20.99 is at the average price of $20.99.

FAB Defense Glock 42 Polymer Magazine Extension, Black - FX4210B

UPC: 7290111585005
MPN: FX4210B
SKU: 51655149945
Manufacturer: FAB Defense

$20.99

Fair Price

At $20.99, this is near the average price of $20.99. Fair price — consider waiting for a drop.

Price Intelligence

Building confidence

Against lowest Matches lowest seen

Typical price Near typical ($20.99)

Data depth 89 days, 0 price changes

Useful signal, but more history will sharpen the read.

Tracked for 89 days. Last PSA verification: 2026-04-13. Recorded 0 price changes. The average price is $20.99.

Live Offers

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