.[KOLAR .750] 12 gauge Stainless Steel/Ceramic Competition/Hunting Choke Tube used for KOLAR .750 BORE

U0: Cylinder/Skeet
U1: Skeet/Improved Cylinder
U2: Light Modified/Modified 
U3: Modified/Improved Modified
U4: Full/Extra Full

U0 is good out to 28 yards.

U1 is good out to 35 yards

U2 is good out to 45 yards

U3 is good out to 60 yards

U4 is good beyond 60 yards

No Limits! Compatible with ALL Target & Hunting ammunition, including Buckshot, Slugs, Steel Shot, Hevi Shot, Tungsten, TSS, Kent, Fasteel, Bismuth, ITX, Winchester Blindside, Federal Black Cloud, Remington Nitro Steel, for Deer, Dove & Quail, Pheasant, Turkey, Duck Hunting, Ducks, Goose Hunting, Geese, Snow Goose, Sea Ducks,  (Slugs not to be used with U4)

Muller Chokes is not responsible for incorrect choke selection. If you are unsure what choke your barrel takes, please check with a reputable gunsmith.