Editing Cooper-T (section)

== Paintball markers and conversion kits ==

[[VintageRex]] lists five entries under Cooper-T. Four concern the IMP conversion family, while the fifth documents a Sniper pump-action marker.[1]

{| class="wikitable"
! Product
! Documented year
! Type
! Description
|-
| [[Cooper-T IMP Kit Sheridan|IMP Kit Sheridan]]
| Not established
| Semi-automatic conversion
| Conversion system for Sheridan and PMI pump markers.
|-
| [[Cooper-T IMP Kit Sniper|IMP Kit Sniper]]
| 1990
| Semi-automatic conversion
| Blowback conversion for the WGP Sniper platform.
|-
| [[Cooper-T IMP Kit Sterling|IMP Kit Sterling]]
| Not established
| Prototype conversion
| Experimental conversion for Sterling pump markers.
|-
| [[Cooper-T IMP Kit|IMP Kit]]
| Not established
| Semi-automatic conversion
| General catalogue entry describing the Sheridan conversion system.
|-
| [[Cooper-T Sniper|Sniper]]
| Not established
| Pump-action
| Sheridan-valve pump marker with direct feed and removable barrel.
|}

The general IMP Kit and IMP Kit Sheridan entries contain substantially the same description and specifications. They should not be treated as two confirmed independent products.[1][5]

=== IMP Kit Sheridan ===

The Sheridan IMP was a semi-automatic conversion for older Sheridan and PMI pump-action markers.

The kit replaced or supplemented the original pump mechanism with a direct-blowback assembly, allowing the marker to recock automatically after firing.

VintageRex records compatibility with Sheridan-style valves, a .68-calibre firing system, direct feed and constant-air operation.

Different-sized bolts were available to accommodate markers including the Sheridan PGP.[8]

The manufacturer's installation instructions document the replacement of several components in the original marker, including the hammer, bolt and trigger arrangement.[9]

=== IMP Kit Sniper ===

The Sniper IMP was designed for the WGP Sniper series of pump-action markers.

It used a similar blowback arrangement to the Sheridan conversion.

VintageRex records the following specifications:[5]

{| class="wikitable"
! Specification
! Detail
|-
| Model
| IMP Kit Sniper
|-
| Catalogue year
| 1990
|-
| Calibre
| .68
|-
| Action
| Mechanical semi-automatic
|-
| Valve system
| Sheridan-style
|-
| Feed system
| Direct feed
|-
| Barrel
| Removable
|-
| Gas source
| Constant air
|}

The original manufacturer advertisement described the kit as a removable conversion that could be installed with limited modification.

A surviving boxed Sniper IMP kit was documented by paintball historian [[Daniel Bacci]] in August 2012, providing evidence of the product's construction and original packaging.[10]

=== IMP Kit Sterling ===

The Sterling IMP was an experimental conversion for the Sterling pump-action marker.

VintageRex records a .68-calibre mechanical semi-automatic configuration using a Sheridan-style valve and constant-air operation.

The archive describes the design as a possible prototype and does not establish commercial production.[6]

=== Cooper-T Sniper ===

VintageRex also lists a marker simply named '''Sniper''' under Cooper-T.

The catalogue identifies it as a .68-calibre pump-action marker using a Sheridan-style valve, direct feed, removable barrel and constant-air operation.[11]

The relationship between this entry and the WGP Sniper conversion has not been established.