Made in the USA
Streamlight® Pressure Switch Mounts
M-Lok Interface Part #400101
Tools Needed:
1/8” Hex Driver
Begin by making sure firearm is unloaded.
Assuming installation is on an AR-15 handguard, determine where you want the pressure switch to sit. Most users install at 12 o’clock position on top of the handguard but you may also want to install it on the side, especially if on another platform of firearm such as a shotgun or submachinegun.
This switch mount comes with two sets of t-nut screws: ¼” length and 3/8” length. Depending on the handguard thickness and the position of the gas tube/gas block inside, you may need to use the shorter ¼” screws to keep from having interference with these parts internally.
Make sure you have enough room for the switch cable to reach the light without binding or putting too much stress on the plug. Keep in mind that you can tuck the cable into the bottom of the switch mount which acts as cable management, eliminating zip ties. For most applications, you will want the cable to orient itself to the rear so you can manage the excess cable with the provided slots on each side, allowing the cable to go forward to the light.
Install the screws and t-nuts into the two mount halves, threading them in approx. 1 full turn.
Identify the two mount halves. One has a single dot, and the other has two dots.
The half with two dots will be your rear mount which will be installed first with the screw oriented towards the muzzle end of the firearm. Install it on the handguard in the slot position you have chosen and push forward towards the muzzle end of the firearm as far as it will go in that slot. Caution: Do not straddle two slots with the mount, make sure you are interfacing with only one complete slot.
While holding down on the assembly, tighten the rear t-nut screw making sure it turns sideways, grabbing onto the inside of the slot.
Tighten the screw to no more than 25-inch pounds.
Slide the pressure switch into the rear mount cable-end first.
With the front mount, orient the t-nut in the same direction as the M-Lok slot. Very gently, lift up very slightly on the front (non-cable end side) of the pressure switch and begin sliding the switch into the front mount half, stopping on the small tab on each mount half.
Holding the pressure switch and the mount halves together, set the assembly into the M-Lok slot and push rearwards. Note” You may have to use a small screwdriver or pliers to orient the t-nut so it slides into the slot.
While holding down on the assembly, tighten the front t-nut screw making sure it turns sideways, grabbing onto the inside of the slot. Tighten to no more than 25-inch pounds. You may need to adjust the initial screw length to get the t-nut to turn correctly.
Make sure the cable is not pinched under the mount and is oriented forward to the light.
Plug switch into light. Note: You may have an older light where the cable is already attached to the endcap. In this case, you will need to assemble the cable into the switch mount slots while it is attached to the light.
Make sure the M-Lok screws do not protrude into the barrel, gas block or gas tube inside the handguard.
Streamlight® Pressure Switch Mounts
Picatinny Rail Interface Part # 400100
Tools Needed:
1/8” Hex Driver
7/64” Hex Driver
Begin by making sure firearm is unloaded.
Assuming installation is on an AR-15 handguard, determine where you want the pressure switch to sit. Most users install at 12 o’clock position on top of the handguard but you may also want to install it on the side, especially if on another platform of firearm such as a shotgun or submachinegun.
Each mount half should have a corresponding clamp, and both should have either a single dot or two dots. Match these parts so each side of the assembly has the same number of dots. Make sure dots are visible in an upright position on both the mount and clamp when installing.
Assemble the two mount halves with the two side clamps using supplied screws tightening only 2 turns. These are now front or rear mount assemblies.
The switch mount comes with a front half and a rear half depending on whether the screws are oriented to the right or left. Either side is fine.
Orient the two halves with both the screws on the same side. The MD letters engraved on the mounts orient to either the front or back depending on which side you choose to orient the screws.
With the cable end pointing towards the rear of the firearm, slide the mount assemblies onto the pressure switch, holding them against the mount (non-clamp) side of the assembly until it stops against the small protrusion at the end of each mount. The clamps will be loose and will not need to be snug against the switch until the assembly is installed on the rail.
Press the switch cable into the cable slots on the side of the mount halves, on the same side of the firearm the light is positioned.
Place the assembly onto the picatinny rail in the pre-determined position with the non-clamp side of the assembly first. Rotate the assembly onto the rail making sure it sits flat on the rail with the screws in the rail slots. The clamps should still be loose.
Push the clamps towards the rail making sure the assembly is flat on the rail and both the clamp side and the mount side of the assembly capture the edge of the pressure switch.
Pinch the clamp to meet the side of the picatinny rail and the switch, lightly tighten the screw making sure the clamp interfaces correctly, capturing the switch and the picatinny rail side. Repeat with other side of the mount assembly.
Make sure switch and mounts are still oriented correctly with the small protrusions on either end holding the switch and lightly tighten the other mount half. If everything is aligned and the switch is flat and level with the rail, and the mount appears to be holding the picatinny rail correctly with no front to back movement, tighten both screws to no more than 10-inch pounds.
Make sure the cable is not pinched under the mount and is oriented forward to the light.
Plug switch into light. Note: You may have an older light where the cable is already attached to the endcap. In this case, you will need to assemble the cable into the switch mount slots while it is attached to the light.
Streamlight® ProTac Pivoting Light Mount
Part # 400102
Tools Needed:
1/8” Hex Driver
Begin by making sure firearm is unloaded.
Assuming installation is on an AR-15 handguard, determine where you want the pivoting light mount to sit. Most users install at 3 o’clock position on the side of the handguard, but you may also want to install it on the bottom.
The half of the mount that attaches to the light is designed to be reversable to allow for more positional options to clear suppressors. Attach the light to the mount. Mockup the position of the light mount to see what works for you. If you find you need additional clearance, you can reverse this half by removing the pivoting screw and turn the light interface half to the other side to give more room to clear suppressors.
This mount can be installed in either a top or bottom light orientation depending on operational requirements. Feel free to try several options before securing the mount a final time.
Once you have selected a position, you may decide to allow the mount to pivot by only tightening the pivot bolt enough to allow some play or you can tighten so it has no movement.
Make sure the M-Lok screws do not protrude into the barrel, gas block or gas tube inside a handguard.
