Carlson's Choke Tubes Shotgun Magazine Extension Assembly, Benelli M1/M2/Super Black Eagle I/II/III, 10-Round, Black, 04518

Choate Tool Remington 870/1100/1187/Versamax 7 Shot Extension 12 Gauge+2 Rounds,12 Gauge, CMT-01-04-02

Wilson Combat Extension Tube, Quick Detach Stud, 1 Shot, 12 Gauge, SGET-QDS-U-1

GG&G 3-Shot Magazine Tube Extension For Mossberg 930 12Ga, Black, GGG-1626-3

Choate Tool Remington 870/1100 Lightweight 20 Gauge 8 Shot Extension +3 Rounds, CMT-01-04-33

Wilson Combat Extension Tube, Right Hand, 2 Shot, 12 Gauge, SGET-RH-2

Wilson Combat Extension Tube, Right Hand, 1 Shot, 12 Gauge, SGET-RH-1

Lyman Remington 870 +3 Round Shotgun Magazine Extension, Black, 3, 1082232

Lancer Systems Shotgun Extension Tube, 3 Round, LSX-3X-ST

Lancer Systems Stoeger M3000/M3K 3-Gun Shotgun Extension Tube, Black, 7Mag, LSX-7X-ST

Lancer Systems Shotgun Extension Tube, 9 Round, LSX-9X-B

Carlson's Choke Tubes CZ 612 Magazine Extension, 8 Shot, Black 04511

Lancer Systems Shotgun Extension Tube, 4 Round, LSX-4X-ST

Lancer Systems Shotgun Extension Tube - LSX-8X-ST

Wilson Combat Extension Tube, Left Hand, 1 Shot, 12 Gauge, Black, SGET-LH-1

Toni System Tube Extension +2 Rounds For Winchester Sxp Ga.12, Black, 2, K7-PSL2-BK

Lyman Remington 870 +2 Rounds Shotgun Magazine Extension, Black, 2, 1082231

Choate Tool Remington 870/1100/1187/Versamax Extension, 12 Gauge +2 Rounds, CMT-01-04-06

Toni System Tube Extension +4 Rounds For Winchester Sxp Ga.12, Black, 4, K7-PSL4-BK

Toni System Tube Extension +2 Rounds For Winchester Sxp Ga.12, Blue, 2, K7-PSL2-BL

Toni System Tube Extension +4 Rounds For Winchester Sxp Ga.12, Blue, 4, K7-PSL4-BL

GG&G Beretta 1301 Shotgun Magazine Tube Extension With Barrel Clamp, Black, GGG-2570

Briley Shotgun Magazine Extension, Benelli/Breda Semi-Auto, 12 Gauge, +6 Rounds, W/Sling Swivel, Matte, Black, TSPA-52SWMAT

Briley Shotgun Magazine Extension, Benelli/Breda Semi-Auto, 12 Gauge, +4 Rounds, W/O Sling Swivel, Polished, Black, TSPA-51POL

Toni System Tube Extension +2 Rounds For Winchester Sx4 Ga.12, Black, 2, K25-PSL2-BK

Toni System Tube Extension +4 Rounds For Winchester Sx4 Ga.12, Black, 4, K25-PSL4-BK

Briley Shotgun Magazine Extension, Benelli/Breda Semi-Auto, 12 Gauge, +6 Rounds, W/O Sling Swivel, Cerakote, OD Green, TSPA-52ODG

Briley Shotgun Magazine Extension, Benelli/Breda Semi-Auto, 12 Gauge, +6 Rounds, W/O Sling Swivel, Cerakote, Tungsten, TSPA-52TUN

Nordic Components Shotgun Extension Tube Nut, Benelli Nova/Supernova, Beretta 1301/391 Xtrema/391 Xtrema II/Tx4/A400/A400 Xtreme, CZ 712/912, Weatherby SA-08, Matte Black, 12Ga, NUT-BR-12-00

Beretta Mobilchoke Extended Ported 12 Gauge Choke Tube, Full, Black, C6A864

Beretta Optimachoke Extended 12 Gauge Choke Tube, Full, Silver, JCOCE13

Toni System Magazine Tube Extension +8 Rounds For Beretta 1301 12Ga, Black, 8, K5-PSL8-BK

Beretta Optimachoke Extended 12 Gauge Choke Tube, Skeet ITA, Silver, JCOCE17

Beretta Mobilchoke Victory Extended 12GA Choke Tube, Full, Silver, JCMEV13

Lyman Winchester SXP +3 Rounds Shotgun Magazine Extension, Black, 3, 1082242