Cloud Defensive LCS Mk2 Review

cloud defensive lcs
| April 14, 2017
Categories: Assorted Ramblings

Cloud Defensive just released the LCS Mk2 to accommodate the popular Streamlight Protac Rail Mount Weapon Light switches. Note: they will NOT work with the Remote Switches for the TLR series lights.

Last year, Merrill did a thorough review of the Rail Mount 2.

Ever since the Mk1’s release for the Surefire ST07 remote switch, owners of the Rail Mount lights have been asking, “What about an LCS for Streamlight?” Sean McCauley listened and went to work. After some prototypes and quality control testing, they are now in production and ready to go.

Cloud Defensive LCS Mk2 Review

The Cloud Defensive LCS Mk2 is Bigger Than the Mk1

I was one of the first to get one in the mail a few weeks ago. It came along with a Streamlight Protac Rail Mount 2 since I run Surefire’s per my preference. My first reaction was, “Holy Hell, that switch is BIG! It’s got to be three times the size of the ST07 I’m used to. Streamlight gets an A for Effort by including a mounting set with rubber rail grabbers, tape, and zip ties. I took a look at the stock mounting options and didn’t even open that bag.

In order to fit the larger-than-life switch, the LCS Mk2 itself is much bigger in size than the Mk1. Since it is much longer in length, there’s a new feature added: the Early Exit cut into the integrated cable channel. It is a little notch in the middle of the cable channel to allow the user more options to mount the light or switch. This was specifically for those who run SBRs. It’s always nice to have options.

Cloud Defensive LCS Mk2

US Elite Gear

Use this discount code ↑↑ when you buy; back Breach-Bang-Clear on Patreon for dozens more codes.



Cloud Defensive LCS Mk2 Review.


The LCS Mk2 is similar to the Mk1 in that it is a three-piece design that creates a secure clamp onto the Picatinny rail. In order to keep the Mk2 as small as possible, the cable channels are on the bottom of the side clamps instead on top like on the Mk1.

Installation is similar to the Mk1. However, you have the Early Exit feature you can use if you need or want to. For this review with my rifle setup, I didn’t use it. There are many ways you can install it, and this is how I do it: Once I find the sweet spots for the light placement and switch, I mount the light. I then hold the Mk2 with the switch on the Picatinny rail where I want it. I tuck the cable in and press it against the switch, then push the screws through. While holding all that together I grab the last piece, start the screws with my fingers, then tighten up with an Allen wrench. It sounds harder than it is.

Cloud Defensive LCS Mk2 Streamlight protac rail mount Review

Once it’s tightened down, you’ll have a secure mount for the remote switch without worrying whether it’ll snag or get ripped off when you don’t want it to.

LCS Mk2 Functionality

The LCS Mk2 is solid and activation is always a sure thing. It’s easy to find and use: when you need light, you’ll get it. The strobing feature on the light was something to get used to, but it was plenty bright.

Cloud Defensive LCS Mk2 Streamlight protac rail mount Review

One thing to note, the tail cap design for the Rail Mount lights do not allow for the cable to be disengaged. Since it is the only place to access the batteries, the best option to replace the batteries is to remove the entire light to get it done because cables don’t like playing twister.

Cloud Defensive LCS Mk2 Streamlight protac rail mount Review

Factory or Custom Finishing

The Cloud Defensive LCS Mk2 comes standard with Type III Hardcoat Anodized finish in black. If you want it in custom colors like Flat Dark Earth, Urban Gray, Burnt Bronze, and Bazooka Green, expect a two- to three-week lead time.

-Fifty Shades of FDE


Cloud Defensive: Read everything we’ve written about ’em.

You may also want to read everything we’ve written about Streamlight flashlights.

No Bullshit - Big Daddy Unlimited is a legit program.

It’s a good program, and you’ll be supporting Breach-Bang-Clear when you join.



Submit a Comment

Your email address will not be published. Required fields are marked *

Browse Other Categories

Browse Archives