Rail disassembly pictures ZDSPB.com > Tech index > Proto Rail > Disassembly pictures

This page doesn't cover a complete overview of the marker, but does highlight some of its main parts. This process begins by removing the grip panels to reveal the electronics. The battery slides out and can be unplugged.
Grips removed Battery removed
The circuit board simply floats in place, grasped within a board-shaped groove in the rear of the frame. It can be slid out after unplugging the connectors, including the eye system's FPC (flex circuit) which has a removal tab to allow greater leverage.

After removing the board, the frame is no longer tied down to the body, so the two can be separated by removing the screws.
Frame removal
The trigger microswitch holds the battery connector inside the frame, but is easily removed using a screwdriver. The microswitch connects to the circuit board on the same connector as the battery.
Empty frame Empty frame Pigtail

The stock circuit board looks like this on both sides (below). The board is very simplistic in terms of design since it doesn't include any sort of wild periphery such as speakers, display panels, etc.
Circuit board Circuit board

Underside of the body, attached is the solenoid and the eye FPC extends from an internal routing canal.
Body underside
The solenoid is held onto the body using a pair of mounting screws, which can be removed to diagnose leaks and such. The marker uses a Humphrey HEB10-A4GL-102W which functions similar to the sister series solenoid used in the newer Bushmaster, Freestyle, and others. After removing the solenoid the base of the body becomes visible:
Body underside Solenoid removed

After removing the eye/detent covers, the actual eye elements are visible (as well as the detent pistons). The eyes themselves are a standard lens-style which float in position; they don't use their own fastening screw or similar, so they can be removed just by gently pushing them out and leading through the internal FPC canal through the body.
Eye cover base
The only other part of the body is the vertical adapter, which simply screws into the body for installation and removal.
Eye cover base

Firing Assembly:
The internals for this marker are laid out similar to that of the other Dye markers, in that they all screw together and are removed as one clean piece. The internal firing assembly functions similar to a Matrix as well, however modified for an unbalanced firing operation, instead of the cleaner balanced bolt found in Proto and Dye Matrices. It functions perfectly well, though, and has some special features.
Bolt assembly
The assembly seen in the above picture has a tophat mod installed, which involves wrapping electrical tape around the dump chamber section, in effort to reduce the air volume of the dump chamber. This can lead to higher efficiency rates by using less amount of higher pressure air. The assembly above also has a New Designz endcap.

When disassembled, the individual components and their interactions are exposed:
Bolt assembly
The only unnatural feature here is the boost-forward bolt movement, which forces the bolt to move quicker during the second half of the forward stroke. This is done by a special secondary chamber behind the bolt which becomes pressurized mid way through the forward movement. When this happens, the forward force increases, and the solenoid is forced to vent quicker, allowing the bolt faster movement. During the recocking stroke, the secondary chamber vents when the bolt moves toward the open position.

The secondary pressure chamber for the bolt is fed using a side-mounted inlet port integrated into the dump chamber housing component. A circular o-ring groove is milled into this inlet passage, which seals against the side of the body bore. This separates the dump chamber pressure from that leading through the inlet port.
Dumpo chamber inlet

An animation of the marker can be seen here: (fast; slow)
Rail animation fast Rail animation slow