Browning Diana Grade 12GA Invector+ Ext Choke Tube – IC 1130583Upgrade your Browning Diana shotgun with the Browning Diana Grade 12GA Invector+ Ext Choke Tube (model IC 1130583, UPC 023614201663). Engineered for precision and durability, this extended choke tube delivers tighter shot patterns, increased downrange energy, and superior versatility for both hunting and sport shooting.Key BenefitsExtended Length Design: Provides an extra 0.75 in (19 mm) of choke length for a denser, more uniform pattern.Invector+ Technology: Optimizes airflow to reduce shot deformation, enhancing accuracy at longer ranges.Durable Construction: Precision‑machined steel barrel and chrome‑plated exterior resist corrosion and wear.Easy Installation: Threaded to fit standard 12‑gauge Diana choke ports—no tools required for a quick swap.Versatile Performance: Ideal for turkey, waterfowl, upland game, and clay target shooting.CompatibilityThis choke tube is specifically designed for the Browning Diana series chambered in 12 gauge. It fits all Diana models that accept standard 12‑gauge choke threads, including:Browning Diana 1200Browning Diana 1400Browning Diana 1600Browning Diana 1800Any custom‑built Diana platform with standard choke threadingTechnical SpecificationsModel NumberIC 1130583UPC023614201663Gauge12 GAChoke TypeExtended Invector+ (Full‑to‑Extra Full)Length0.75 in (19 mm) extended over standard chokeMaterialHeat‑treated steel with chrome platingFinishMatte black with corrosion‑resistant coatingThread SizeStandard 12‑GA Diana choke threadInstallation & MaintenanceInstalling the Browning Diana Grade 12GA Invector+ Ext Choke Tube is straightforward:Ensure the shotgun is unloaded and the barrel is cool.Unscrew the existing choke by turning counter‑clockwise.Align the new choke tube with the barrel threads and turn clockwise until snug. Do not overtighten.Run a short test shot to confirm proper seating and pattern performance.For long‑term reliability, clean the choke after each use with a mild solvent and a soft brush. Re‑apply a thin layer of oil to the threads before storage.Why Choose Browning?Browning has a legacy of over 150 years in firearms innovation. The Diana series is renowned for its balance, reliability, and smooth handling. By pairing your Diana with the Invector+ Ext choke tube, you leverage Browning’s patented choke technology to achieve tighter shot patterns, reduced pellet spread, and higher impact energy—all while maintaining the iconic feel of your shotgun.Customer Reviews"The extra length makes a noticeable difference in pattern density, especially on turkey runs. Installation was a breeze, and the results speak for themselves!" – Mark J., Professional Hunter"I love the crisp, consistent groups I get at 40 yards. The Invector+ tech really reduces shot deformation." – Lisa T., Clay Shooter