Beretta 390 / 3901
The parts here are specific to both the Beretta 390 & 3901 shotgun models chambered in 12 or 20 gauge unless otherwise noted. MGW carries replacement stocks, forends, barrels, sights, trigger groups, pins and other parts for these models. Keep your semi-auto 390 or 3901 firing like new with OEM replacement parts and aftermarket upgrades.
The schematic may not represent all the parts available - please scroll down for a complete list of items offered for this model.
Click on any part number highlighted in RED to view specific details or to purchase online.
It is recommended that all parts be fit by a qualified gunsmith.
Showing 305 - 320 of 378 results
Showing 305 - 320 of 378 results


Beretta A300 / 390 / 391 Action Spring
$8.48
In Stock

Beretta Sear Spring, 12/20/28 Gauge
$5.25
In Stock

Beretta 390 Exhaust Valve, 12 and 20 Gauge
$15.75
Discontinued

Beretta 390/391/303/ Browning B-80 Cocking Handle, 12/20 Gauge
$30.19
Sold Out

Beretta 300 Series/390/391/A300 Extractor Spring / 90 Series Pistol Safety Plunger Spring
$7.88
In Stock

Beretta 303/390/391/A300 Extractor Plunger, 12/20 GA.
$7.35
In Stock

Beretta 300/390 Gas Piston Bushing Washer
$7.35
In Stock

Beretta 390 /300 Series / Browning B-80 Gas Piston Bushing, 12/20 Gauge
$15.75
In Stock