/ Back Beretta 303 Shotgun Parts Click on the schematic to the left to open an exploded view of this firearm in a new window. For pricing and availability please call or email with: Firearm Name Gauge Or Caliber Complete Serial Number Complete Part Number(s) Complete Part Name(s) Email Request To: customerservice@midwestgunworks.com Part Number Description PO13002 Action Bar & Sleeve 12 Ga PO13004 Action Bar & Sleeve 20 Ga PO13006 Action Spring 12 & 20 Ga PO13009 Action Spring Follower 12 & 20 Ga PO13013 Action Spring Plug 12 & 20 Ga PO13017 Action Spring Plug Pin 12 & 20 Ga PO13020 Action Tube 12 & 20 Ga PO13025 Bolt Slide 12 Ga PO13027 Bolt Slide 20 Ga PO13030 Breech Bolt 12 Ga PO13035 Breech Bolt 20 Ga PO13038 Butt Plate 12 Ga Superlight PO13039 Butt Plate Screw PO13040 Butt Stock 12 Ga Field PO13045 Butt Stock 20 Ga Field PO13043 Butt Stock 12 Ga Superlight PO13050 Carrier 12 Ga PO13052 Carrier 20 Ga PO13054 Carrier Dog 12 & 20 Ga PO13058 Carrier Dog Pin 12 & 20 Ga PO13062 Carrier Dog Spring 12 & 20 Ga PO13066 Carrier Dog Spring Follower 12 & 20 Ga PO13070 Carrier Latch 12& 20 Ga PO13074 Carrier Latch Pin 12 & 20 Ga PO13078 Carrier Latch Lock Pin 12 & 20 Ga PO13079 Carrier Latch Lock Pin 12 Ga Superlight PO13082 Carrier Latch Spring 12 & 20 Ga PO13085 Carrier Pin 12 Ga PO13087 Carrier Pin 20 Ga PO13090 Carrier Release 12 Ga PO13092 Carrier Release 20 Ga PO13094 Carrier Release Pin 12 & 20 Ga PO13098 Carrier Release Spring 12 Ga PO13100 Carrier Release Spring 20 Ga PO13102 Carrier Spring 12 & 20 Ga PO13106 Carrier Spring Guide 12 & 20 Ga PO13110 Carrier Spring Guide Pivot Front 12 & 20 Ga PO13114 Carrier Spring Guide Pivot Rear 12 & 20 Ga PO13118 Cartridge Stop Button 12 & 20 Ga PO13122 Cartridge Stop Pin 12 & 20 Ga PO13126 Cartridge Stop Spring 12 & 20 Ga PO13130 Disconnector 12 & 20 Ga PO13134 Disconnector Pin 12 & 20 Ga PO13138 Disconnector Spring 12 & 20 Ga PO13142 Disconnector Spring Guide 12 & 20 Ga PO13146 Extractor 12 Ga PO13148 Extractor 20 Ga PO13150 Extractor Pin 12 & 20 Ga PO13154 Extractor Spring 12 & 20 Ga PO13158 Extractor Spring Plunger 12 & 20 Ga PO13162 Ejector 12 & 20 Ga PO13166 Ejector Pin 12 & 20 Ga PO13168 Ejector Pin 12 Ga Superlight PO13170 Ejector Spring 12 & 20 Ga PO13174 Ejector Spring Follower 12 & 20 Ga PO13178 Firing Pin 12 Ga PO13180 Firing Pin 20 Ga PO13182 Firing Pin Retaining Pin 12 Ga PO13184 Firing Pin Retaining Pin 20 Ga PO13185 Firing Pin Spring 12 & 20 Ga PO13190 Forearm Field 12 Ga PO13192 Forearm Superlight 12 Ga PO13196 Forearm Field 20 Ga PO13200 Forearm Cap Assembly 12 & 20 Ga (Assembled) PO13202 Forearm Cap Assembly with Eyelet 12 & 20 Ga (Assembled) PO13208 Forearm Guide Screws 12 & 20 Ga (Requires 2) PO13222 Gas Piston 12 Ga PO13224 Gas Piston 20 Ga PO13226 Gas Piston Seal 12 & 20 Ga PO13230 Gas Piston Seal Retaining Ring 12 & 20 Ga PO13235 Hammer 12 Ga PO13237 Hammer 20 Ga PO13240 Hammer Bar Right 12 & 20 Ga PO13244 Hammer Bar Left 12 & 20 Ga PO13248 Hammer Pin 12 Ga PO13250 Hammer Pin 20 Ga PO13252 Hammer Pin Circlip 12 & 20 Ga PO13256 Link 12 Ga PO13258 Link 20 Ga PO13260 Link Pin 12 Ga PO13262 Link Pin 20 Ga PO13265 Locking Block 12 Ga PO13267 Locking Block 20 Ga PO13270 Magazine Spring 12 Ga PO13272 Magazine Spring 20 Ga PO13275 Magazine Spring Follower 12 Ga PO13277 Magazine Spring Follower 20 Ga PO13280 Magazine Spring Retainer & Forearm Cap Stud 12 Ga PO13282 Magazine Spring Retainer & Forearm Cap Stud 20 Ga PO13284 Magazine Spring Retainer Lock Spring PO13288 Magazine Three Shot Adapter 12 Ga PO13290 Magazine Three Shot Adapter 20 Ga PO13295 Magazine Tube 12 Ga PO13298 Magazine Tube 20 Ga PO13302 Mainspring 12 & 20 Ga PO13306 Mainspring Guide 12 & 20 Ga PO13312 Mainspring Support 12 & 20 Ga PO13317 Mainspring Support Pin 12 & 20 Ga PO13322 Operating Handle 12 Ga PO13324 Operating Handle 20 Ga PO13328 Operating Handle Retainer 12 & 20 Ga PO13332 Operating Handle Retainer Pin 12 Ga PO13334 Operating Handle Retainer Pin 20 Ga PO13336 Operating Handle Retainer Spring 12 & 20 Ga PO13340 Receiver 12 Ga PO13346 Receiver 20 Ga PO13342 Receiver 12 Ga Superlight PO13350 Recoil Adapter Standard 12 Ga Only PO13351 Recoil Adapter Alloy 12 Ga PO13353 Recoil Adapter 20 Ga PO13352 Safety 12 & 20 Ga PO13354 Safety Left Hand 12 & 20 Ga PO13358 Safety Spring 12 & 20 Ga PO13362 Safety Spring Follower 12 & 20 Ga PO13368 Sight Bead Front 12 & 20 Ga PO13374 Stock Retaining Plate 12 & 20 Ga PO13380 Stock Nut 12 & 20 Ga PO13386 Trigger 12 & 20 Ga PO13392 Trigger Guard 12 Ga PO13395 Trigger Guard 20 Ga PO13398 Trigger Guard Retaining Pin 12 Ga PO13401 Trigger Guard Retaining Pin 20 Ga PO13404 Trigger Pin 12 & 20 Ga PO13410 Trigger Spring 12 & 20 Ga PO13415 Trigger Spring Plunger 12 & 20 Ga NP = Not Pictured On Schematic All parts fit Browning B-80, Beretta 300, Beretta 301, Beretta 302, Beretta 303, and Beretta 304