Editing Steve Constable (section)

== Engineering approach ==

=== Adaptation of existing mechanisms ===

Constable's earliest paintball designs were influenced by the Nelson Nelspot mechanism.

He adapted existing marker technology while experimenting with different external bodies, loading systems and gas reservoirs.

Although he initially modified Sheridan rifles, his original marker designs did not necessarily use Sheridan-style internal valves.

In February 2015, Constable personally commented on Daniel Bacci's historical article to clarify that his original markers used '''Nelspot-derived valve designs''', rather than Sheridan valve mechanisms.[1]

This correction is important because some early collector accounts had described his equipment as mechanically similar to Sheridan markers.

=== Internal carbon dioxide reservoirs ===

Several of Constable's early rifles incorporated internal carbon dioxide reservoirs.

The approach differed from the disposable cartridges used by many early paintball markers and from the external tanks that subsequently became standard.

The wooden M-16 and FN-49 were examples of Constable's experimentation with integrated gas storage.

His later designs reflected the paintball industry's movement toward more standardised compressed-gas systems.

=== Manufacturing in New Zealand ===

Constable's equipment combined locally developed designs with manufacturing and engineering resources available in New Zealand.

His work included modifying imported equipment, developing original mechanisms and arranging the manufacture of complete marker components.

Historical research into the FN-49 has identified a possible manufacturing connection with Gatenby Automatic Engineering and engineer Ian Warren.[3]

The surviving record does not fully document which components were manufactured directly by Constable and which were produced by subcontractors.

Nevertheless, the surviving equipment establishes that complete PSI paintball markers were developed and manufactured in New Zealand during the 1980s.