Browning Midas Grade Extended Chokes tubes
Specifically designed for clay targets, these extend 
beyond the barrel for easy removal and installation without a wrench. Minimum 
gap geometry plus high-resolution finish reduce buildup of plastics in the 
shotgun bore. Stainless steel and black oxide finish. - When used in Browning 
barrels, barrels must be threaded for Invector-Plus - Browning Midas Grade choke 
tubes produce tighter patterns than Browning Invector-Plus choke tubes
Browning Midas Grade Extended Choke Tube available in 12 Gauge, Choke 
Spreader, Cylinder Bore, Full, Improved Cylinder, Improved Modified, Light 
Modified, Modified, Skeet, Extra Full and Trap