Atlas Mounting Solution (AMS) – REIN

  • Designed for the AR15 ATLAS S-ONE handguard line from Aero Precision and Ballistic Advantage
  • 2 Piece Locking Clamp Design – Utilizes factory REIN hardware for secure fit
  • Patented Integrated Cable Channels (ICC) help maintain low drag profile
  • Officially licensed with Cloud Defensive LLC

*Mount Only: REIN Remote Switch Not Included*

*Compatible with Gen 1, and Gen 2 Switches*

Made in the USA – Full Lifetime Warranty

In stock


The Atlas Mounting Solution (AMS) REIN is the first member of the AMS family, which brings pressure pad/remote switch integration to the popular AR-15 ATLAS S-ONE handguards offered by Aero Precision and Ballistic Advantage.

Developed in cooperation with Cloud Defensive, the AMS REIN maintains all the pros of the traditional picatinny rail clamps, and optimizes them for the specific application of the ATLAS S-ONE handguards. Staying true to the nature of the S-ONE, the switch itself sits slightly lower than it’s picatinny mounted counterpart, and is extremely lightweight at just over .5 oz. The two piece locking clamp design utilizes factory REIN switch hardware for a secure and reliable fit, while also integrating Cloud’s patented Integrated Cable Channels (ICC) to help maintain the low drag profile.

For those looking to mount Streamlight or Modbutton Lite switches to their S-ONE, these variants are in the works and will be announced soon. Further information on the Cloud Defensive REIN is available here.

  • Officially licensed with Cloud Defensive LLC : US Pat. 10,514,235
  • Images display REIN Micros on both a 7 and 15 inch AR-15 ATLAS S-ONE handguards
  • Mount Only: REIN Remote Switch Not Included

For installation guidelines, please scroll to the bottom of this page

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SKU: AMS-REIN Category: Tag:

Installation Guide

To ensure proper installation of your AMS - REIN, please refer to the following outline

Proper Installation

The recoil lugs on the backside of the mounts should sandwich the thinner support sections in the upper rail cutouts.

Improper Installation

Incorrectly installed in this example, the recoil lugs sit free in the larger overall channel. This allows for potential undesired movements fore and aft in the channel.

*NOTE: Handguard dimensions shown above are representative of the 12 inch ATLAS S-ONE model

Copy that, but why not design the lugs to fill the entire channel?

The ATLAS S-ONE line of handguards does not utilize universal dimensions for the length of the channel cutouts, only for their height, and the distance between. For example, the channels on the 15 inch S-ONE are approx. .975″ long, whereas the channels on the 7 inch model are approx. .885″. As a result, filling the entire channel would require 5 distinct models to be produced, one for each handguard length, which is more restrictive to end users, inefficient in manufacturing, and generally cost prohibitive as a result.

Don’t worry though, there are still plenty of options for mounting locations, across all S-ONE lengths, more than are actually usable on the longer handguards, since you are limited, by cable length,¬†as to how far rearward you can mount.

General Installation Process

1 – Pre-position your mount on your handguard to test ergonomics and plan cable routing.

2 – When in the desired position, press the two halves into place on the handguard, with the switch still in place. The lugs may be very tight and require some light pressure to seat fully.

3 – After ensuring proper seating in the channels, press fit the two hex nuts from the REIN switch factory mounting hardware and insert the factory mounting screws, aligning all three components: the two mounting halves and the switch itself.

4 – Now, with everything lined up and routed as desired, tighten the two screws to officially lock the mount in place. Aim a half a turn past hand snug for proper torque.

For any questions or general support regarding your AMS -REIN, please reach out via our support form and we will get back to you ASAP

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