Tag: MTW

FRAC Installation

Loosen castle nut with armorer’s wrench. Unscrew castle nut all the way back and slide buffer tube plate back. Don’t lose selector spring and detent if not retained in lower. Unscrew buffer tube.

Install FRAC orientation ring against castle nut.

Install FRAC body with button on the left side of the gun. (Shown upside down. Don’t push the button on the FRAC!)

Thread buffer tube into lower. Align buffer tube to gun and push FRAC up to the back of the lower. Snug down castle nut by hand. Do not thread buffer tube in past the front edge of the buffer tube extension or upper will not install.

Tighten Castle nut with armorer’s wrench.

Remove air line with ¼” wrench.

Install FRAC air line with ¼” wrench.

M4/MTW-9: Use 3.5″ airline.
MTW-308/Shotgun: use 4.5″ airline.

Install engine.

M4/MTW-9: Upside down (airline on top of engine).
MTW-308: Install regularly.

Feed airline through FRAC while holding button, then secure body pins.

308/Shotgun Firmware Configurations

The MTW-308 is shipped with a the standard MTW Spartan Electronics Control Board with dedicated 308/Shotgun firmware. This firmware includes two configurations: “308 Mode” and “Shotgun Mode.” The MTW-308 is set to “308 Mode” from the factory, but it is possible to change the mode accidentally and enter “Shotgun Mode,” which features additional dwell (a longer release of air) only suitable for shotgun builds. You can tell which configuration your MTW is set to by listening to the sound of the dwell. See the examples below.

308 Mode

Shotgun Mode

The configuration can be toggled between the two modes by holding down the trigger for at least 15 seconds. The MTW may fire or make a small click to let you know the mode has been changed.

NOTE: The MTW may also fire after 5 seconds, indicating the select fire mode has been changed. Continue to hold the trigger until the 15-second mark and the gun fires or clicks. If you desired, you can then set your fire mode as desired by holding down the trigger for 5 seconds. See this article for more information: https://www.wolverineairsoft.com/knowledgebase/mtw-spartan-electronics-for-mtw-spec-fire-modes/

Tank Grip: Disassembling a gun with an installed Tank Grip

Disassembling an MTW or Article of Heresy with an installed Tank Grip requires disconnecting the airline from the STORM Category 5 regulator first.

First, disassemble the Tank Grip by removing the 8 screws with a 2mm hex key.

Once you can access the regulator, press and hold down on the push-to-connect fitting while pulling upwards on the airline. Then continue to separate the upper and lower receiver as normal.

When closing the receiver set, press and hold down on the push-to-connect fitting and insert the airline into the connector until it stops.