Tag: MTW

MTW Compatibility Guide

The MTW is designed to be a modular platform with highly interchangeable parts within the MTW-Spec family, with real steel firearms, and with AEGs when possible. The chart below can help you answer compatibility questions among different components and MTW series.

Viewing on mobile? Turn your phone sideways!

FeatureMTW-M4 (Billet, Forged)MTW-9MTW-308MTW-ShotgunMTW AKArticle Series
Barrel (Inner)AEGAEGAEGAEGAEGAEG
Barrel (Outer)MTWMTWMTWMTW Gen-12LCTMTW
Body PinsReal Steel M4Real Steel M4Real Steel 308Real Steel 308N/AReal Steel M4
Bolt CatchMTWMTWMTWMTWN/AMTW
BuckingAEGAEGAEGMTW Gen-12AEGAEG
Buffer TubeReal SteelReal SteelReal SteelReal SteelReal SteelReal Steel
Charging HandleReal Steel with modificationReal Steel with modificationReal Steel with modificationMTW Gen-12MTW AKN/A
Contact Yoke MTWMTWMTWMTWN/AMTW
Dust CoverReal Steel M4Real Steel M4Real Steel 308N/AReal Steel AKN/A
ElectronicsMTWMTWMTWMTWMTW AKMTW
EnginesINFERNO/REAPERINFERNO/REAPERINFERNOHAVOCINFERNO/REAPERINFERNO/REAPER
Feed Tube1MTW M4MTW-9MTW-308MTW M4MTW AKMTW M4
Flash Hider14mm negative14mm negative14mm negativeMTW Gen-1224mm negative14mm negative
Grips2Real Steel M4Real Steel M4Real Steel M4Real Steel M4Real Steel AKReal Steel M4
Hop up MTWMTWMTWMTW Gen-12MTWMTW
MagazinesMTW/AEG (M4)ASG EVOMTW/AEG (SR25/308)MTW/AEG (SR25/308)AEG AKMTW/AEG (M4)
Rail/ Handguard3AEGAEGAEGMTW Gen-12LCT AK HandguardsAEG
Receiver (Lower)MTW M4MTW-9MTW-308MTW-308N/AMTW M4 
Receiver (Upper)MTW-M4MTW-M4MTW-308MTW Gen-12N/AMTW-M4
Selector Switch MTWMTWMTWMTWLCT AKMTW
Springs, Pins and DetentsReal Steel M4Real Steel M4Real Steel M4Real Steel M4N/AReal Steel M4
Triggers MTWMTWMTWMTWMTW AKMTW
WRAITH Stocks MTWMTWMTWMTWMTWMTW
  1. Three generations of feed tube exist. For more details, see this article. ↩︎
  2. If storing battery in or running air line through grip, modification is needed. See video. ↩︎
  3. MTW barrel nut only compatible with MTW rails. Most AEG rails and Real Steel barrel nuts are compatible. ↩︎

FRAC Installation / Uninstallation

Gen-12

Video Instructions

Text Instructions

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.

Uninstallation

Got a FRAC but want to switch back to a traditional grip line? It’s easy to uninstall. But first you’ll need a standard gripline and your choice of sling plate.

Loosen the castle nut with an armorer’s wrench, and then unscrew the buffer tube from the MTW to remove it. If your FRAC was preinstalled on your MTW when you purchased it, your buffer tube may had a small amount of blue Loctite applied to the threads, requiring a little additional force to remove.

Remove the FRAC and FRAC orientation ring and replaced with your sling plate. Reinstall your buffer tube. Do not thread buffer tube in past the front edge of the buffer tube extension or upper will not install. Tighten the barrel nut.

Remove the engine from your MTW and remove the FRAC air line with ¼” wrench. Replace it with your standard grip line and reinstall your engine.

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

Heretic Labs Article IV

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.