4Sevens’ New WS1 Pistol Light | SHOT 2017

4Sevens is starting to get into the weapon light market. They have been quietly making some great handheld lights for over the past 10 years. Their Quark series is rather popular as it is modular so you can choose different heads for different modes of light as well as different body lengths for your choice of batteries. I remember a few years ago when David unveiled his massive XM18 work light. It is discontinued now but it has 18 Cree XM-L leds and is powered by 28x RCR18650! It puts out 15,000 lumens for a solid hour or you can dim it down to 600 lumens to run for 24 hours.


Lately, David has been making smart flashlights that can pair up with their 4Sevens app. The app will allow you to check the current battery life and remaining runtime, configure the modes and set proximity alarms.

David has used this feature and integrated it into his WS1 weapon light. You can program the side switches so you can decide which one is for constant on and which one is momentary on. The WS1 features a secondary red nav light at the bottom of the pistol so you can use it to navigate in the dark without using the main white beam. More interesting is that the app reports the status of the WS1 and acts like a GPS tracker. Since the app is on your phone and you allow location services on the app, the app will mark the location of the phone the last time it paired up with the WS1. While it is not an up to date current live tracking of the WS1, it is a nice feature.

The WS1 is powered by an internal rechargeable battery that you plug a USB cord into. There is a small sliding door to cover up the USB port but it is not waterproof.

Here is the WS1 on an M&P compact. It attaches to pistol accessory rails and Picatinny rails.

The WS1 will retail for $100 MSRP and will be 600 lumens at full brightness. According to David the WS1 will taper the light output when the unit starts to heat up.

4Sevens also had a prototype tactical ball that acts like a flashbang but without the noise. David says it puts out 8k lumens.

Nicholas C

Co-Founder of KRISSTALK forums, an owner’s support group and all things KRISS Vector related. Nick found his passion through competitive shooting while living in NY. He participates in USPSA and 3Gun. He loves all things that shoots and flashlights. Really really bright flashlights.

Any questions please email him at nicholas.c@staff.thefirearmblog.com


  • noob

    is the 4Sevens #LEDflashbang safe for airsoft use? or is it the sort of things that friends don’t use on friends?

    • Sunshine_Shooter

      8000 lumens is a lot of light. It’snot made to light up a room, it’s meant to blind people.

      I’d use it on my friends, but you might actually like your friends.

    • Keiichi

      Just make sure everybody’s wearing some nifty tacticool sunglasses ?

    • Bill

      I may need some to try out. The “tactical balls” were miserably underpowered and essentially useless.

  • Cymond

    The Quark series no longer works that way, there is only the Quark Click. The Pro and Tactical models were discontinued long ago.

    Also, I’ve seen bad reviews of their other “smart” light, and as far as I know, they *still* don’t have an Android app.

    • Jason

      Yep. I asked on the 4sevens facebook page and still no app for the number one selling phone in the world. 🙁

  • Not waterproof, no thank you.

    • Jacob

      definitely a negative aspect. but that seems like a pretty simple thing that theyll probably remedy in a future version

      • It shouldn’t be that hard, I’ve seen a number of micro USB powered devices that achieve an IPX8 rating. And that is without a cover that is just the bare jack.

    • Keiichi

      Eh, unless you’re an operational operator operating operationally, waterproof is mostly a “nice to have”. As a home defense or even EDC light, no big deal.

      • I disagree. Sure if they gun never leaves the house water resistance isn’t important.

        Maybe it isn’t important to you but I’ve been out during tropical storms, waded through swamps, ditches, and jumped in the pool full clothed to save someone. Based on my life I’ve found that having a items with a real water
        resistance level is important. I’ve killed a number of low level water
        resistant items.

        And I’m not some SEAL or Delta dude scuba diving with my guns.

        • Keiichi

          Yeah, I guess… whatever boats your float, my comment was only mostly serious.

          For a $100 light, especially their first entry in the pistol light market, I don’t think it should be held against them.

        • Bison “FANatic”

          If it’s between jumping in the pool to save someone’s life and my $100 gun flashlight then forget it. I mean I paid a whole $100 for that thing. No way am I giving up what essentially is a few hours of work and risk breaking it over someone who shouldn’t get in a pool if they can swim anyway. Am O right or what?

      • Jr Dirty

        I know what you mean, but ‘water resistant’ (rain proof) would have been a good compromise.

      • billyoblivion

        For home defense…yeah, probably not.

        For going outside? I hike, I ride bicycles, snowshoe, nordic skiing etc. Would hate to fall in a creek period, full stop (snow melt is *COLD). But it would be worse if now my weapon light stopped working.

  • Jacob

    I like it. About 40% the cost of the XC1.

  • Keiichi

    I love my Preon P1 and P2 that I EDC.

    Very interested to see some reviews of their new weapon light… if it meets the quality of the Preons, it’ll be a good one.

    Also, $100 for a 600 lumen pistol light in that form factor? Yes please.

  • TheNotoriousIUD

    Im gonna grab a few of those light balls for a rave im going to this weekend.

  • Badwolf

    Tactical balls… to the wall

  • Chris Miller

    I’d be interested in seeing how the WS1 stacks up compared to the XC-1, especially for the money. Though the XC-1’s ability to run on a standard AAA makes it more appealing even if more expensive. The Preon is my EDC light and the Quark sits in my chest rig for SHTF/ duty use.The tactical ball light (naming could’ve used some more thought) seems brilliant (pun not intended), pair it with my noise based mock flashbangs, it could be an interesting tool.