Description
If you've ever wrestled with ranger bands trying to keep a LightCap or ScopeCap seated, the One Hundred Concepts ShockCollar Medium is the fix. It's a machined locking ring with built-in eyelets that the shock cord threads through, so instead of looping cord around your light or optic body and hoping it stays put, everything anchors cleanly to the head itself. The result is a lower-profile, far less fiddly setup that looks sharp and holds tight.
What the ShockCollar Actually Solves
The biggest gripe One Hundred Concepts heard from folks running their caps was how annoying installation and battery changes could get. By locking the shock cord directly to the light head, the ShockCollar gives you a free range of motion with no more binding or unlooping every time you need access. That means pulling a light head for a battery swap or actuating a rotating head on a Vampire-style Scout light is quick and drama-free. If you're running an LPVO where a big magnification throw sits at the rear of the optic, it keeps the cord from fouling your adjustment too.
Fitment for the Medium ShockCollar
This is the Medium size, built to pair with the Medium LightCap or ScopeCap, which covers a 1.25-inch bezel diameter. On the weapon-light side, Medium is the size that lines up with popular heads like the Modlite OKW/PLH and IR series and the Cloud Defensive REIN 2.0. The rule of thumb is simple: order the same size collar as the cap you're running and you're set.
Clean, Matte, and Built to Disappear
Finished in matte black, the ShockCollar keeps a low profile and doesn't draw attention on a working gun. It's a small part that makes a noticeable difference in how a capped light or optic feels day to day, and it ditches the ranger band that normally ships with those caps for something that looks and functions a whole lot better.
Key Specifications
- Manufacturer: One Hundred Concepts
- Model: ShockCollar
- Size: Medium
- Fit: Medium LightCap or ScopeCap (1.25 in / 31.75mm)
- Common Light Compatibility: Modlite OKW/PLH & IR, Cloud Defensive REIN 2.0
- Color: Black
- Finish: Matte
- Product Type: Accessory
- Subcategory: Caps & Covers
- Manufacturer Part Number: OHC-CLR-MD
- UPC: 3511144142183
What’s Included
- One ShockCollar (Medium)
- Two screws of differing lengths to fit varied diameters
- Two nuts
Frequently Asked Questions
What size light does the Medium ShockCollar fit?
The Medium ShockCollar is matched to the Medium LightCap and ScopeCap, which handle a 1.25-inch bezel diameter. On weapon lights that lines up with heads like the Modlite OKW/PLH and IR series and the Cloud Defensive REIN 2.0. The easiest way to size it is to simply match the collar to the size of the cap you're running.
Do I still need a ranger band if I use the ShockCollar?
No. The ShockCollar is designed to replace the ranger band that normally comes with your LightCap or ScopeCap. It uses a locking ring with eyelets that the shock cord threads through, giving you a cleaner, more secure hold without the extra rubber band.
Does the ShockCollar make battery changes easier?
Yes, that's a big part of why it exists. By locking the shock cord to the light head itself, you get a free range of motion so you can pull the head for a battery swap or actuate a rotating Vampire-style head without unlooping anything. It also keeps the cord from binding when you adjust magnification on an LPVO.
Will the Medium ShockCollar work with a ScopeCap too?
It will. The ShockCollar is built to pair with both LightCaps and ScopeCaps, and it's especially handy on optics with rotating oculars like the EOTECH Vudu and certain Nightforce scopes. Just order the Medium collar to match a Medium cap.





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