NRA 2014: Hands-On with EO-Techs new Laser Battery Caps

Released at SHOTShow earlier this year, EO-Tech had a few sample at their NRA booth. Available for the 512 or 522, the Laser Battery Cap (LBC) is a stand-alone accessory and is now shipping as a complete package with applicable sights. Options include a visible-only laser or a visible & IR LBC.


The lasers are mind-numblingly intuitive (switch = “On”), which I consider a good thing. With their placement, the switches do not extend into the field-of-view of teh shooter.The units were sturdy, not showing any movement when I tried to push hard with my hands.  I would suspect that they will hold zero or have very little POI shift using EO-Tech’s mounting cantilever system.

EO-Tech has offered units for review. We hope to get them in soon and will run them through the harshest test we know: Nathan 3-gunning. Just this weekend, I managed to fall twice, have to split my ACR into separate receivers to safe a weapon, and was hit by shrapnel off a steel target. For all the effort, I came in 3rd.

Gallery below of the two models:

Nathan S

One of TFB’s resident Jarheads, Nathan now works within the firearms industry. A consecutive Marine rifle and pistol expert, he enjoys local 3-gun, NFA, gunsmithing, MSR’s, & high-speed gear. Nathan has traveled to over 30 countries working with US DoD & foreign MoDs.

The above post is my opinion and does not reflect the views of any company or organization.


  • jbgleason

    have to split my ACR into separate receivers to safe a weapon
    Huh???? Explanation please.

    • David

      I think he meant save.

      • Nope, Nicholas is exactly right. A roll pin in my charging handle did not allow me to rack my action. Rather than shoot the remaining round, i split my receivers. Not sure why… it was a good idea at the time.

    • Nicholas C

      In 3Gun, if you use your rifle other than the last weapon in a stage, you have to “ground” or “safe” the weapon otherwise you run the risk of a DQ.(disqualification). I assume there was some sort of malfunction either with putting his gun on safe or there was a round stuck in the chamber, So if Nathan removed his lower, then the gun would not be able to fire in that condition. Thereby rendering it safe.

  • Nicholas C

    Ooh I look forward to seeing your review Nathan. I hope to see some sweet 3Gun video too.

  • No love for the 553? This is a pretty cool idea.. except it makes a heavy optic even heavier.

  • DiverEngrSL17K

    I seem to recall that we had a discussion here on TFB some months ago about the EO-Tech LBC. Nice to see a follow-up with more proof-testing to come — many thanks for putting in the time and effort!

  • seans

    If the IR version doesn’t have a flood feature it is going to have limited tactical value.