Custom Block I – Precision

We don't optimise a single component. We optimise the entire system.

Custom Block I – Precision is the first level of the PRIMOREGGIMENTO.COM upgrade programme, focused on refining the inner barrel and hop-up assembly of airsoft replicas.

Starting from €79.90.

The service aims to improve accuracy, shot-to-shot consistency and efficiency through careful component selection and precise adjustment. Every upgrade is tailored to the individual replica rather than simply installing aftermarket parts.

Features and technical specifications

• Workshop: PRIMOREGGIMENTO.COM
• Service: inner barrel and hop-up system optimisation
• Complete hop-up assembly inspection and servicing
• Installation of a precision inner barrel selected for the replica
• Installation of a high-performance hop-up bucking
• Thorough cleaning of the inner barrel and hop-up assembly
• Inspection and optimisation of the fit between the barrel, bucking and hop-up chamber
• Hop-up alignment and adjustment
• Power output optimisation through spring replacement when necessary
• Chronograph checks and final functional testing
• Components: normally Maple Leaf or equivalent products of comparable quality, selected for the platform

A complete optimisation service

A precision inner barrel alone does not necessarily guarantee better accuracy. Manufacturing tolerances, bucking positioning and hop-up alignment can affect shooting performance even when individual components are of good quality.

Custom Block I focuses on how these elements work together, aiming for consistent operation and better use of the installed components' potential.

Targeted improvements

• Improved accuracy and shot-to-shot consistency
• More progressive and uniform hop-up adjustment
• Better efficiency and use of the inner barrel's potential
• An optimised foundation for subsequent Custom Block levels

Actual improvements depend on the replica's configuration, tolerances and initial condition.

Frequently asked questions

Why might spring replacement also be necessary?

Greater barrel and hop-up efficiency can change pneumatic performance and power output. When necessary, we install a spring better suited to the updated configuration and verify the result with a chronograph.

Do you always use the same barrel and bucking?

No. Components are selected according to the platform and actual component fit. We normally favour Maple Leaf or equivalent solutions of comparable quality rather than using an identical combination for every replica.

Does the service guarantee the same improvement on every replica?

No. Original component condition, tolerances and wear affect the final result. The objective is to achieve the best possible balance for each configuration, not to promise identical numerical improvements.

The Custom Block philosophy

We have been studying and upgrading airsoft replicas since 1997. In 2004, this experience became part of the everyday work of PRIMOREGGIMENTO.COM.

The Custom Block method combines component selection, careful inspection of mechanical fit and individual tuning. It is the work performed on the complete system, rather than a single replacement part, that distinguishes a Custom Block from a standard upgrade.