The Rifle Basix Replacement Trigger for CZ 455 (Model: CZ-55) is an aftermarket single-stage rimfire rifle replacement trigger engineered specifically for Česká Zbrojovka CZ 455 bolt-action rifles. It replaces the factory trigger group to eliminate trigger creep and overtravel, providing a clean, predictable break that improves downrange shot placement. The mechanical unit fits directly into the factory receiver without requiring stock inletting and integrates with the OEM factory safety mechanism. It operates across all factory CZ 455 calibres, including .22 LR, .22 WMR, .17 HMR, and .17 HM2.

Key Features

• Adjustable Pull Weight: Delivers user-tunable let-off weight ranging from 10 oz to 2.5 lbs (approximately 283 g to 1,134 g).
• Independent Sear Adjustment: Features dedicated external adjustment screws for both pull weight and sear engagement to eliminate creep.
• Factory Safety Retention: Operates in conjunction with the original factory CZ safety lever.
• Direct Receiver Fit: Installs into the factory action housing without stock inletting, utilizing included replacement pivot pins, sear release pins, and adjustment hardware.

Product Specifications

• Trigger Type: Single-stage adjustable replacement trigger
• Pull Weight Range: 10 oz to 2.5 lbs (283 g to 1,134 g)
• Action Compatibility: Factory CZ 455 bolt-action rimfire receivers
• Calibre Compatibility: .22 LR, .22 WMR, .17 HMR, and .17 HM2
• Finish Options: Silver or Black anodised/coated
• Included Components: Trigger lever, pull adjustment screw, trigger return spring, CZ 455 skirt pin, trigger pivot pin, sear adjustment screw, 3 mm × 18 mm sear release pin, and adjustment wrench
• Power Requirements: None (fully mechanical)

Who is the Rifle Basix Replacement Trigger For Cz 455 10oz-2.5lbs for?

• Precision Rimfire Benchrest Shooters — Requires an ultra-light, crisp let-off down to 10 oz (283 g) to minimise disturbance to the rifle on target bags, replacing the heavier factory trigger without needing inletting work on precision stocks.
• Target Competition Shooters — Demands independent sear engagement tuning and an adjustable pull weight of up to 2.5 lbs (1,134 g) to dial out pre-travel and establish a consistent, repeatable break on CZ 455 match actions.
• Small-Game and Varmint Hunters — Benefits from maintaining a safe field pull weight between 1.5 lbs and 2.5 lbs (680 g to 1,134 g) that retains the OEM bolt safety mechanism while eliminating creep for accurate shot placement on small targets.

Less suitable for: Shooters requiring sub-ounce benchrest triggers below the 10 oz threshold (who require dedicated two-stage competition trigger units), users seeking heavy field triggers over 2.5 lbs for cold-weather duty with gloves (who are better served by the factory trigger assembly or heavy-spring kits), and owners of older CZ 452 or newer CZ 457 actions due to physical receiver incompatibility.