Description

Fits: Most later model Beretta shotguns with Optima HP threading – including A400, 686, 690, 694, and DT11. Optional 55mm extended chokes available (non-colourized, limited sizes).

Choose from:

• Full (1/1) – *Lead Only* (Code: 274544)
• Improved Modified (3/4) – *Lead Only* (Code: 274545)
• Improved Cylinder (1/4) – Steel Compatible (Code: 274546)
• Skeet (SK) – Steel Compatible (Code: 274547)
• Light Full (LF) – Steel Compatible (Code: 274571)

Gemini chokes are manufactured in Italy using modern CNC machinery and 42CrMo4 alloy steel for exceptional strength, balance, and resilience. Each choke undergoes rigorous quality checks with precision calibrations throughout the production cycle.

Gemini applies a proprietary multi-step finishing process to optimize performance and durability:

• Grinding + Lapping – For precision fit and consistent shot patterns.
• Nickel Plating (Niplate HV500) – Internal finish reduces fouling and corrosion.
• Chroming/Burnishing – Adds external toughness and polish.
• DLC Coating (Diamond-Like Carbon) – Enhances hardness (2500–3000 HV), reduces glare, and provides anti-friction properties.

• 42CrMo4 Alloy Steel – Standard for most chokes; heat-treated, normalized, and plated for long-term performance.
• 17-4 PH Stainless Steel – Used in thin-walled chokes; hardened without coatings for steel shot use.
• Grade 5 Titanium (Ti 6Al-4V) – Ultra-light and DLC-coated; ideal for competition use where balance is key.

Each choke is laser-marked to indicate compatibility with steel or lead shot, and complies with Banco Nazionale di Prova standards for pressure and safety.

• Always unload your firearm before removing or installing chokes.
• Inspect threads and contact surfaces for damage or debris.
• Ensure choke is securely tightened to prevent gas blow-by.
• For best results, clean regularly and apply high-temperature grease before reinstalling.

We are NZ’s largest firearms dealers. We have been selling, importing, exporting, manufacturing, customising and repairing firearms and accessories since 1978. We have the largest range of guns, ammo and accessories online in New Zealand.

Please call our shop for more information on +64 3 379-8888 in Christchurch, New Zealand.

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