Perception ISM-IR, Built-in Sighting Module -The Firearm Weblog

Thirsty for extra evening vision-related content material? Properly, drink up right here at Friday Evening Lights. Final week we took a take a look at EOTech’s premium thermal clip-on. Properly, this week we check out a discontinued product from Perception. The ISM-IR is the built-in sighting module. It’s a crimson dot with an built-in multi-function aiming laser (MFAL), mainly a PEQ-15. Let’s take a more in-depth look.

Lasers @ TFB:

What’s Previous Is New, Perception ISM-IR

It appears business tendencies are round. A crimson dot with built-in MFAL? Why that’s the Wilcox Boss Xe, proper? Properly sure however earlier than that Perception made the ISM. Here’s what Perception stated in a catalog from 2008.

Perception continues the subsequent technology of multi-function aiming gadgets, the ISM-VTM. The ISM-VTM is the world’s solely totally Built-in Sighting Module with co-aligned seen aiming laser constructed to outlive actual world use. With its single set of high-precision, tactile windage and elevation adjusters, the co-aligned crimson dot and visual laser are dialed into the goal on the similar time.

The ISM-IR takes the total functionality of the ISM-V and provides a co-aligned IR aiming laser and a variable focus IR laser illuminator. The revolutionary result’s a revolutionary mixture able to making a power multiplier impact when deployed on any Mil-standard 1913 rail.

The ISM-IR is their infrared variant of the ISM. It has a crimson VIS aiming laser, infrared aiming laser and infrared laser illuminator, similar to a PEQ-15. All built-in right into a 2 MOA crimson dot.

You possibly can see the infrared illuminator off to the facet of the tape swap plug. Identical to the PEQ-15, you may twist it to regulate the beam divergence. It makes use of the identical diffuser cap because the PEQ-15. The IR and VIS aiming lasers are on the opposite facet of the distant swap port.

The ISM has an Perception/Crane distant swap port within the entrance center of the optic. That is superior. Not like the Wilcox Boss Xe which has its distant swap port at the back of the unit. They wasted a pair inches of cable simply to achieve round and plug within the tape swap. It’s extremely unlikely you’d ever have the Wilcox Boss Xe in entrance of your tape swap. Similar with the ISM-IR. This permits tape switches to be shorter and positioned the place they must be, in entrance of the optic at or close to 12 o’clock.

Behind the ISM-IR, you will have the battery compartment to the left and the facility/selector swap on the proper. The ISM-IR is powered by a single CR123 battery. It weighs just below 11 ounces with the battery and has a run time of greater than 500 hours with simply the crimson dot. In between the battery compartment and selector swap is a yellow-green indicator LED. This allows you to know when the laser is activated.

The selector is considerably much like a PEQ-15.

  • O – OFF
  • P – Programe Mode
  • RD – Crimson Dot
  • VA – VIS Aiming Laser
  • AL – Intention Low (IR Aiming Laser Low Output)
  • DL – Twin Low (IR Aiming and Illuminator Low Output)
  • AH – Intention Excessive (IR Aiming Laser Excessive Output)
  • DH – Twin Excessive (IR Aiming and Illuminator Excessive Output)

The opening at AH is for the blue security screw to bodily block the selector swap from choosing the high-power IR modes. And like an ATPIAL PEQ-15, the ISM-IR has an eye-safe 5mW VIS laser. The IR laser is 50mW.

The blue security screw is saved on the left facet of the ISM-IR just under and to the left of the laser activation button. To the left of the button is the windage adjustment screw. As talked about by Perception, the ISM-IR lasers are co-aligned to the crimson dot. So if you alter the crimson dot, it strikes the lasers as nicely.

The elevation adjustment screw is on prime and behind it are the brightness controls for the crimson dot. To activate the crimson dot, the selector lever must be an RD or any of the laser modes. Then you need to press each the + and – buttons on the similar time to show the crimson dot on.

Measurement-wise the ISM-IR is just not that a lot totally different from the PEQ-15. You possibly can see they even use an identical button for the laser activation.

Weapon Mounting The ISM-IR

Picture by Tommy Constructed.

The ISM generally has been largely related to the H&Ok XM8. In line with XM8 professional, Tom Bostic, the XM8 model of the Perception ISM has a proprietary mounting system known as P-CAPS. Listed below are some images Tom shared with me.

Picture by Tommy Constructed

Picture by Tommy Constructed

You recognize these bizarre holes on the handguard for the XM8? These are additionally P-CAPS. Wish to see an actual XM8 PDW? Click on here to learn my article about it.

Picture by Tommy Constructed

The P-CAPS model is just too area of interest and solely works on XM8s. Regular ISMs have a easy Picatinny grabbing mount.

Tom Bostic made a railed carry deal with that matches G36s and XM8s and permits any crimson dot, or on this case the ISM-IR to sit down comfortably similar to the P-CAPS ISM on the XM8. Tom despatched me a blemished carry deal with some time again and I used it on my H&Ok SL8 for an XM8 particular thermal weapon sight.  So once I obtained the ISM-IR, I needed to put it on the SL8.

It clears the rail fairly nicely however do you see the instant drawback? The issue is just not unique to this setup. It’s mounting the ISM-IR to most firearms. How do you activate the laser? For my SL8, I can shift the ISM-IR again somewhat so an Perception tape swap could be plugged in. I run it alongside the carry deal with and down by way of the opening on the entrance of the carry deal with. Then Velcro the tape swap to the highest of the polymer handguard. I can use gaffer tape or zip ties to safe the tape swap cable. However I can remotely activate the ISM lasers with out having to achieve again and contact the button on the facet of the housing. Permitting me to make use of correct laser self-discipline. And like all Perception laser, I can double faucet the button or the tape swap to have fixed activation moderately than simply momentary. Listed below are another firearms I attempted the ISM-IR on. Identical to the SL8, the Hellion works nicely with the ISM. I route the distant swap alongside the carry deal with and Velcro it within the house in entrance of the charging deal with.

The PS90 is a bit ridiculous. It’s too tall and activation on this case is convoluted.

I used to be curious if this might be helpful on the FLUX Raider. Whereas it’s good having all the things, aside from white gentle, all within the ISM-IR on the FLUX Raider, activation is even worse than the PS90. The PEQ-14 works higher for this weapon.

Evening Time Taking pictures Perfection With The ISM-IR

Whereas the ISM-IR is just not appropriate for a number of the weapons above, I believe I’ve discovered an ideal weapon to place it on. My H&Ok SP5. Earlier than the ISM-IR, I discovered the EOTech laser battery cowl (LBC) to be my favourite crimson dot/laser setup for the MP5. The LBC has a VIS and IR laser with crane ports for each. I used a Unity TAPS swap taped to the facet of my LDI lighted handguard. So I may activate VIS and IR laser with the push of a button. For illumination, I exploit a SureFire Vampire head.

By switching over to the ISM, I get rid of the necessity for twin buttons and IR illumination. The one draw back now could be that I do not need VIS over-ride for the VIS laser. However that’s okay. I can have white gentle solely now for the lighted handguard and simply goal passively with the crimson dot. That is the perfect evening imaginative and prescient gun setup I’ve run thus far for the MP5. Every little thing I want is activated with my help hand. I can passively goal with evening imaginative and prescient goggles or press the laser button on the Unity TAPS for lively IR aiming and illumination. If I want white gentle I can squeeze the handguard swap.

One minor subject working the ISM-IR is the IR illuminator may be very near the highest rail of most firearms you mount it on. So it is not uncommon for the IR illuminator to splash throughout the highest. This was the identical subject I had with the Wilcox Boss Xe. For my “MP5SD at house”, I exploit a Unity Tactical FAST optic riser. This will get the optic larger for passive aiming with evening imaginative and prescient and reduces the splash of the illuminator throughout the highest of the handguard and suppressor. It helps that I can slender the IR illuminator beam divergence for higher throw down vary which additionally minimizes the splash on the gun. This additionally helps with the UNITY Hotbutton I exploit to activate the laser which is mounted at 12 o’clock and in entrance of the ISM.

I’m debating transferring the recent button off to the facet with an offset rail so it’s not consistent with the illuminator. Or swap it out for a Modbutton for a decrease profile whereas nonetheless protecting it ambidextrous.

ISM Variants

There are VIS-only variations of the ISM. My pal Steve_MP5 has a VIS-only ISM on his Tommybuilt XM8. However there’s additionally a uncommon 4x scope variant of the ISM known as the AMO (Superior Magnified Optic). Consider an ACOG with an built-in PEQ-15. Tom Bostic has one on his Cobra Commander XM8 build.

Picture by Tommy Constructed

The man I obtained the ISM-IR from apparently had an AMO however I didn’t know what it was on the time and another person purchased it earlier than I did. Listed below are some images he shared with me. You possibly can see how a lot greater the AMO is in comparison with the ISMs. I purchased two of the ISMs.

The AMO has a big rubber sunshade.

As a substitute of a crimson dot, it has a reticle and it’s 4x magnification.

I zoomed in to raised see the reticle.

Remaining Ideas On The ISM-IR

Keep in mind the GBRS Hydra Mount? The ISM-IR accomplishes the identical factor in a extra compact setup. You simply want a riser. Certain the ISM might be a bit larger to match the optic top of the Hrydra mount however that’s the solely compromise. The Hydra setup has the identical performance because the ISM however in an even bigger bundle that appears like it can get snagged on issues. Laser activation is just not nice for the Hydra however isn’t worse than the ISM.

Sadly, the ISM is discontinued. They fetch comparable pricing as a full-power PEQ-15 which it mainly is with an built-in crimson dot. You possibly can construct one thing comparable with Farrowtech’s crimson dot sight mounting plates for Steiner lasers. However the ISM-IR is cooler. If you will discover one I like to recommend selecting it up. It’s a nice piece of equipment that has all the things packed in a decently sized crimson dot.

Insight ISM-IR, Integrated Sighting Module -The Firearm Blog is written by Nicholas C for

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