A12 Choke Baikal – M (1/2 / 0,50 mm), A12 Choke Crioplus Benelli M2 – C (0/0 / 0,00 mm), A12 Choke Crioplus Benelli M2 – IC (1/4 / 0,25 mm), A12 Choke Crioplus Benelli M2 – M (1/2 / 0,50 mm), A12 Choke Crioplus Benelli M2 – IM (3/4 / 0,75 mm), A12 Choke Crioplus Benelli M2 – F (4/4 / 1,00 mm), A12 Choke Fabarm – M (1/2 / 0,50 mm), A12 Choke Fair – M (1/2 / 0,50 mm), A12 Choke Hatsan – M (1/2 / 0,50 mm), A12 Choke Invector Mossberg – C (0/0 / 0,00 mm), A12 Choke Invector Mossberg – IC (1/4 / 0,25 mm), A12 Choke Invector Mossberg – M (1/2 / 0,50 mm), A12 Choke Invector Mossberg – IM (3/4 / 0,75 mm), A12 Choke Invector Mossberg – F (4/4 / 1,00 mm), A12 Choke Invector Plus Browning – C (0/0 / 0,00 mm), A12 Choke Invector Plus Browning – IC (1/4 / 0,25 mm), A12 Choke Invector Plus Browning – M (1/2 / 0,50 mm), A12 Choke Invector Plus Browning – IM (3/4 / 0,75 mm), A12 Choke Invector Plus Browning – F (4/4 / 1,00 mm), A12 Choke Mobilechoke Franchi – C (0/0 / 0,00 mm), A12 Choke Mobilechoke Franchi – IC (1/4 / 0,25 mm), A12 Choke Mobilechoke Franchi – M (1/2 / 0,50 mm), A12 Choke Mobilechoke Franchi – IM (3/4 / 0,75 mm), A12 Choke Mobilechoke Franchi – F (4/4 / 1,00 mm), A12 Choke Optima HP Beretta – C (0/0 / 0,00 mm), A12 Choke Optima HP Beretta – IC (1/4 / 0,25 mm), A12 Choke Optima HP Beretta – M (1/2 / 0,50 mm), A12 Choke Optima HP Beretta – IM (3/4 / 0,75 mm), A12 Choke Optima HP Beretta – F (4/4 / 1,00 mm), A12 Choke Remington 870 – C (0/0 / 0,00 mm), A12 Choke Remington 870 – IC (1/4 / 0,25 mm), A12 Choke Remington 870 – M (1/2 / 0,50 mm), A12 Choke Remington 870 – IM (3/4 / 0,75 mm), A12 Choke Remington 870 – F (4/4 / 1,00 mm), A12 Choke Remington Pro Bore – M (1/2 / 0,50 mm), A12 Choke Yildiz / EGE – M (1/2 / 0,50 mm)