RAS Installation Guide
The Redacted Arms Selector (RAS) installs as a direct replacement for your existing AR-15 safety selector. Most installs are straightforward, but trigger compatibility and Lever Blocker requirements vary — review the compatibility table below before installing.
A full-auto / M16-style bolt carrier group (BCG) is required for the RAS to function.
Installation Video
Installation Steps
Prepare the Lower
Ensure the firearm is unloaded. Remove the Allen key grip screw, pull off the pistol grip, and remove the spring. Drop the detent out and set it aside — you will reuse it. Remove your existing safety selector and set it aside.
Disassemble the RAS
Remove the T10 screw on the side of the RAS to separate the lever from the shaft. Set the lever aside. Reinsert the spring onto the shaft.
Install the Lever
Drop the lever into the left side safety selector hole with the hook facing toward the buffer.
Install the Shaft
Insert the shaft into the receiver, feeding the end of it through the hole in the lever’s hook. Maintain pressure on the right side of the shaft to keep it seated. Align the keys on the shaft with the keys on the lever — wiggle it slightly until it seats fully.
Secure the RAS
Insert and tighten the T10 screw. If using a torque screwdriver, torque to 15 in-lbs.
Reinstall the Detent and Grip
Flip the lower upside down and drop the detent in pointy side down. Place the spring into the pistol grip, reinstall the grip, and make sure the spring drops into the detent hole. Tighten the grip screw fully.
Function Check
With the upper removed, cock the hammer and run through each position:
- Safe — Pull the trigger. The hammer should not fall.
- Fire — Pull the trigger. The hammer should fall normally.
- Active Safety (middle position) — Pull the trigger to drop the hammer. Hold the trigger down, cock the hammer again, and manually move the lever rearward to simulate bolt cycling. The trigger should reset as the lever travels back. Release the lever forward. Once the RAS rotates fully to Fire, the trigger should break cleanly.
Trigger Compatibility Table
Compatibility is based on our direct testing. Your results may vary depending on your specific rifle and part tolerances.
If using a Geissele® trigger, the Lever Blocker is required.
| Brand | Model | Type | Compatible |
|---|---|---|---|
| Geissele | SSA | Two Stage | YES* |
| Geissele | SSA-E | Two Stage | YES* |
| Geissele | S3G | Single Stage | YES |
| Geissele | SD3G | Single Stage | YES |
| Geissele | G2S | Two Stage | YES* |
| Geissele | SD-E | Two Stage | YES* |
| Geissele | SSAEX | Two Stage | MODIFICATION REQUIRED |
| Geissele | SSAX | Two Stage | MODIFICATION REQUIRED |
| CMMG | Milspec | Single Stage | NO |
| DPMS | Milspec | Single Stage | NO |
| Jacob Gray | Jacob Gray Single Stage | Single Stage | YES |
| MimTac | MimTac Drastic | Single Stage | YES |
| Noveske | Noveske Single Stage | Single Stage | YES |
| PSA | PSA EPT | Single Stage | YES |
| PSA | PSA Custom SS Drop In | Single Stage | YES |
| Rise Armament | Rave 140 | Single Stage | YES |
| Rise Armament | RA 434 | Single Stage | YES |
| Rise Armament | RA 535 | Single Stage | YES |
| Rise Armament | RA Blitz | Single Stage | YES |
| Rise Armament | RA LE145 | Single Stage | YES |
| Rise Armament | ICONIC | Two Stage | NO |
| Schmid Inside | Schmid Two-Stage | Two Stage | MODIFICATION REQUIRED |
| Schmid Inside | Schmid Pro Line Trigger | Single Stage | YES |
| Schmid Inside | Schmid Inside GI Flat Face SS | Single Stage | YES |
| Schmid Inside | Schmid Inside Match Flat Face SS | Single Stage | YES |
| Smith Defense | AR15 Lower Parts Kit | Single Stage | YES |
| Sons of Liberty Gun Works | SOLGW LFT | Single Stage | YES |
| Spikes Tactical | Spikes ST Battle | Single Stage | YES |
| Timney | Timney Competition 3LB | Single Stage | YES |
| Timney | Calvin Elite | Single Stage | YES |
| Heckler & Koch | HK MR556A1 Trigger | Single Stage | NO |
*Geissele® two-stage triggers may require light polishing or minor material removal on the top of the trigger shoe tail. The Lever Blocker is required with all Geissele® triggers.
Triggers marked MODIFICATION REQUIRED are compatible only after modification. Do not purchase if you are unwilling to modify.