Which option

The AXON SL has one button. The option decides what that button activates.

On SYNC the two devices cannot be separated. There is one button and both circuits close together, so both come on and both go off. That follows from the wiring rather than from a design choice.

If either device needs to work on its own, this is the wrong switch. The full-size AXON has two buttons and activates a light and a laser independently under one hand. Two single lead ModButton Lites do the same from two rail positions.

Activation

For a light, the button has two actions. Pressure alone gives momentary, with no click: the light is on while it is held. A click sets it constant on, and a second click releases it.

That is the difference between this line and the ModButton Lite, which is momentary only and cannot be left on from the rail. Here constant on is available without reaching back to the tail cap.

For a laser, the button is momentary only. Most lasers use a double tap to constant from their own controls, and the switch passes it through. On SYNC, the laser follows the light on the same press.

Which plug

The Surefire/Modlite plug is the light side. A round pin seats into the port on the back of the tail cap. Modlite states it fits Surefire, Arisaka and Modlite Scout bodies, and the Surefire UE and DS00 tail caps.

The Crane Plug is the laser side. It meets the device at ninety degrees so the cable runs along the body rather than straight out of the back, which keeps the installation compact, and it is the smaller of the two, so they are easy to tell apart. The name comes from the Naval Surface Warfare Center at Crane, Indiana, where the standardization work behind it started. Modlite states it fits the PEQ-15, sold commercially as the L3Harris ATPIAL, along with the B.E. Meyers MAWL and the Wilcox RAIDx. Check the port on your laser before ordering.

SYNC carries both, one per lead.

For a light running a USB-C tail cap, see the LINK USB-C version, which also offers a 7 inch lead.

Tail cap options

A light lead seats at the tail cap, so the Surefire and SYNC options need one and it is not included. The Crane Plug option goes to a laser and needs no tail cap at all.

Unlike the ModButton Lite, the tail cap here is not where constant on comes from. The switch already has it. That makes the UE the straightforward pairing, since its button would be a second control for a function already under the support hand. The DS00 is worth keeping if it is already on the light.

Cable

4.5″. The Surefire-plug SL is made in this length only; the 7 inch lead is a USB-C option.

The switch is molded to the cable and the cable to the plug, so the length is fixed at purchase.

The ModButton and AXON switches

Built from two single leads:

The AXON SL on SYNC and the ModButton Lite dual lead cover the same ground: two devices, one button, one hand position. The difference is that the SL adds constant on at the rail for the light, and mounts hard to the rail rather than through clamps.

Note that SYNC appears on the full-size AXON as well, where it means something different. That switch already has two buttons and two devices, so SYNC there changes what the angled button covers rather than adding a device.

Mounting

The AXON SL hardmounts directly to an M1913 Picatinny rail. There is no clamp to remove and no separate mount to buy for a Picatinny handguard.

For an M-LOK surface, the AXON SL M-LOK mounting plate is the adapter. The ModButton guards and SNAP mounts do not fit this switch; they are ModButton parts and clamp to a different housing.

Placement

Twelve o’clock is common for a white light switch, reachable with the support hand thumb from most grips. Two and ten put it on the side of the rail, which is where a laser switch often goes once the light has taken twelve. Which side follows whether the shooter is left or right handed. Rail length and handguard diameter set what is reachable without changing grip.

The 45 degree button face is the reason to think about this differently than a flat pad. The angle sets where the thumb meets the button, so the mounting position and the angle work together rather than separately.

On SYNC, one switch covers both devices, so there is one position to settle rather than two, and both leads route from the same housing. Route close to the rail to avoid snags and clear of barrel heat.

Construction

• Molded from high-impact polymer
• 45 degree angled button face
• Hardmounts to M1913 Picatinny
• Unity Tactical design

Specifications

• Configuration: one lead, or two on SYNC
• Buttons: one
• Plugs: Surefire/Modlite, Crane Plug, or both on SYNC
• Activation: for a light, momentary on pressure and constant with a click. For a laser, momentary only
• Cable: 4.5″
• Mounting: M1913 Picatinny, M-LOK with the AXON SL mounting plate
• Color: Black or FDE
• Tail cap: not included, and not required on the Crane Plug option

Complete your setup

Sold separately.

• Surefire UE tail cap, port only, nothing on the back of the light
• Surefire DS00 tail cap, adds a button at the light
• AXON SL M-LOK mounting plate

About

The AXON SL is a Unity Tactical design, the smaller single button switch in the AXON family. Modlite builds weapon lights and handhelds for professional use, made and assembled in the USA.

Availability

Special order, contact SierraTac for specific lead time.