Description
Item Description
Bryant Ridge Co. is pleased to present this Spanish shotgun today for a penny-start auction; this is the Martin Amuategui “Side by Side” Model!
SPECIFICATIONS:
Manufacturer: Martin (Amuategui) of the Eibar Region / UMBE Workshop/Importer
Model: Side-by-Side
Serial: 28753
Caliber: 20 Gauge with 3" Chamber
Finish: Blue
Barrel Length: 28" with Improved Modified Chokes
Optics/Sights: Bead Front
Stock/Grips: Checkered Walnut Forearm and Pistol Grip Stock
Action: Side-by-Side
Markings: Standard / Game scene engravings on receiver.
Bryant Ridge's Analysis:
The “UMBE”-marked 20-gauge shotguns attributed to the Martin workshop of Eibar, Spain, are characteristic examples of the region’s long-standing gunmaking tradition. Built in the Basque heart of Spanish firearms production, these shotguns typically feature clean external lines, solid steel barrels, and straightforward double-barrel construction suited to upland and field use. The 20-76 chamber marking indicates a 3-inch chamber, giving the gun excellent versatility with both standard and magnum 20-gauge loads. Many examples show the hallmarks of mid-century Spanish craftsmanship: well-proportioned stocks, practical bead-front sights, and good overall balance, making them comfortable to carry and quick to shoulder.
Model: Side-by-Side
Serial: 28753
Caliber: 20 Gauge with 3" Chamber
Finish: Blue
Barrel Length: 28" with Improved Modified Chokes
Optics/Sights: Bead Front
Stock/Grips: Checkered Walnut Forearm and Pistol Grip Stock
Action: Side-by-Side
Markings: Standard / Game scene engravings on receiver.
Bryant Ridge's Analysis:
The “UMBE”-marked 20-gauge shotguns attributed to the Martin workshop of Eibar, Spain, are characteristic examples of the region’s long-standing gunmaking tradition. Built in the Basque heart of Spanish firearms production, these shotguns typically feature clean external lines, solid steel barrels, and straightforward double-barrel construction suited to upland and field use. The 20-76 chamber marking indicates a 3-inch chamber, giving the gun excellent versatility with both standard and magnum 20-gauge loads. Many examples show the hallmarks of mid-century Spanish craftsmanship: well-proportioned stocks, practical bead-front sights, and good overall balance, making them comfortable to carry and quick to shoulder.
While not heavily ornamented, these shotguns often possess an understated elegance and a focus on functional performance. The barrels are usually well-regulated, providing consistent patterns, and the handling qualities tend to favor fast, instinctive shooting—an advantage for small-game or upland bird hunters. The action, wood fit, and lockup on well-preserved examples reflect the skill of Eibar’s artisans, whose work remains appreciated by those who value traditional European doubles. As a result, a Martin/UMBE 20-gauge can be a rewarding shotgun to shoot and own, offering a blend of heritage, practicality, and classic Basque gunmaking character.
Return Policy:
We gladly offer a 3 day unfired inspection policy from the time that the firearm is delivered to your FFL. Refunds are available for all qualifying orders.
Return Policy:
We gladly offer a 3 day unfired inspection policy from the time that the firearm is delivered to your FFL. Refunds are available for all qualifying orders.
Shipping Details
Handgun Standard Shipping with Insurance $50.00
Long Gun Standard Shipping with Insurance $70.00
Any orders placed with magazines that are not compliant with your state, county, or city regulations will not ship with your order.




