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Cloud Defensive LCS for Streamlight

This product is regulated by ITAR. It can only be shipped in the USA.

Video | What’s Included | Specs | Pictures | Restrictions | Related Info

The Cloud Defensive LCS (Light Control System) is a rugged activation solution for rifle-mounted weapon lights– possibly THE most rugged if you’re wanting to run a pressure pad. The LCS simply attaches to regular Picatinny rail (most commonly at the 12 o’clock position). It’s also very versatile. As such, there are a lot of possible configurations.

Simply drop a Streamlight ProTac Pressure Pad into the LCS and you’re set. We highly recommend this setup if you’re not constantly switching out your laser/light equipment and want something intuitive and extremely rugged. (Note: Tape switch is not included).


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One center section Cloud Defensive LCS (Light Control System); Two LCS side clamps; Two 8-32 Torx screws and nuts.

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  • 3-piece clamp design allows for fit across all Picatinny rails (not for use with M-LOK or KeyMod).
  • Locks up 100% to your weapon. Zero movement. Zero play. Virtually indestructible.
  • Creates a perfectly snug friction-fit for the pressure pad.
  • No “give” in the tape switch when depressed makes for easier and more positive light engagement.
  • Fully ambidextrous and reversible.
  • Allows for use of the entire length of the tape switch.
  • Radiused/chamfered edges for comfort and ergonomic function.
  • Proprietary Integrated Cable Channels (ICC) are integrated into both sides of the mount, giving the user the ability to control excess cable.
  • Channels can be used for other cable management as well (IR, etc.).
  • “Early Exit” feature allows the user to route the cable into the LCS and then exit the mount early.

The LCS does not support the TLR-series switches. Designed exclusively for the Streamlight ProTac series weaponlights.
Tape switch is not included.

Width: 1.35″
Height: 0.575″
Length: 3.4″
Weight: 1.08 oz.

Made of proprietary impact resistant injection molded glass-filled nylon.
Custom-manufactured size 8-32 Torx-drive screws. Made from hardened steel and then black nitride plated for superior corrosion resistance.

100% Made in the USA.

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This product is restricted by International Traffic in Arms Regulations (ITAR) and cannot be shipped outside of the USA.

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Our Most Recommended Rifle Upgrades – Help – T.REX ARMS

Where to Mount Your Rifle Light – Video – T.REX ARMS

Streamlight Protac Rail Mount HL-X and Cloud LCS Overview – Video – T.REX ARMS

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