Overview Superior from sporting to the marsh. The longer choke taper inside Invector-PlusTM choke tubes is made for use with back-bored barrels to produce excellent patterns with excellent uniform densities under all conditions. Available in constrictions ranging from Cylinder to X-Full Produces excellent patterns with uniform densities All Browning tubes are set to industry constriction standards Flush fit does not extend beyond the end of the barrel (except X-Full Turkey and X-Full Trap models) Constructed of highly polished, 17-4 stainless steel for the ultimate in performance and durability Invector-Plus choke tubes fit only Browning shotguns designed for Invector-Plus and are NOT for use in shotguns showing Standard Invector or Invector-DS on the barrel(s). Click here to learn more about Browning choke tubes. Specifications Type INV PLUS FULL,12 INV PLUS IMP MOD,12 INV PLUS MOD,12 INV PLUS IMP CYL,12 INV PLUS SKEET,12 INV PLUS CYL,12 INV PLUS X FULL TKY/TRAP,12 Item Number 1130753 UPC 023614154532 Material 17-4 Stainless Steel Color Stainless Steel Pockets Stainless Choke Gauge 12 Choke Pattern Percentage 55%-85% Choke Notches I Length 0" Weight 3.2 oz MSRP $36.99 Item Number 1130763 UPC 023614154549 Material 17-4 Stainless Steel Color Stainless Steel Pockets Stainless Choke Gauge 12 Choke Pattern Percentage 45%-75% Choke Notches II Length 0" Weight 4.8 oz MSRP $36.99 Item Number 1130773 UPC 023614154556 Material 17-4 Stainless Steel Color Stainless Steel Pockets Stainless Choke Gauge 12 Choke Pattern Percentage 35%-65% Choke Notches III Length 0" Weight 4.8 oz MSRP $36.99 Item Number 1130783 UPC 023614154563 Material 17-4 Stainless Steel Color Stainless Steel Pockets Stainless Choke Gauge 12 Choke Pattern Percentage 25%-55% Choke Notches IIII Length 0" Weight 4.8 oz MSRP $36.99 Item Number 1130793 UPC 023614154570 Material 17-4 Stainless Steel Color Stainless Steel Pockets Stainless Choke Gauge 12 Choke Pattern Percentage 20%-45% Choke Notches IIIII Length 0" Weight 4.8 oz MSRP $36.99 Item Number 1130803 UPC 023614240358 Material 17-4 Stainless Steel Color Stainless Steel Pockets Stainless Choke Gauge 12 Choke Pattern Percentage 15%-45% Length 0" Weight 4.8 oz MSRP $36.99 Item Number 1130833 UPC 023614239925 Material 17-4 Stainless Steel Color Stainless Steel Pockets Blued Choke Gauge 12 Choke Pattern Percentage 75%-85% Length 0" Weight 4.8 oz MSRP $72.99 Recommended New Maxus II Stalker $1,859.99 12 Gauge T-Wrench – Fits all Browning Choke Systems $25.99 Moldable Ear Plugs $41.99 Dry Fire Gore-Tex Paclite® Jacket $157.99 Nitro Case – Shotgun $72.99