Description
The CMMG ZEROED 60/90 Ambidextrous Safety Selector solves two problems at once: it gives you controls on both sides of the receiver, and it lets you pick your own throw angle. The reversible barrel is the trick here. Flip it one way for the familiar 90-degree travel that feels like every AR you've handled, or flip it the other for a snappy 60-degree short throw that shaves movement off every safe-to-fire transition. It's built for AR-15 and AR-10 pattern lowers, so it drops into most standard mil-spec builds.
Why the ZEROED Reversible Barrel Matters
Most ambi selectors lock you into one throw and that's that. The ZEROED design hands the decision back to you. If you shoot competition or want the fastest possible sweep off safe, the 60-degree setting is your friend. If you'd rather keep the muscle memory you already trust, the 90-degree setting is right there. Change your mind down the road? Pull it, reverse the barrel, reinstall. No new parts, no second purchase.
Ambi Levers Built for Real Handling
The stylized serrations on the levers give you a positive surface to catch under your thumb, which counts when your hands are cold, wet, or gloved up. Because it's fully ambidextrous, southpaws get true thumb access instead of reaching over the top of the receiver. You can also choose which side gets the short or long lever, so the paddle doesn't dig into your firing grip.
Solid Build, Simple Install
CMMG machines this one for smooth, positive engagement and backs it with their Lifetime Quality Guarantee. Assembly hardware comes in the package, and swapping a safety selector is one of the more beginner-friendly upgrades on an AR. A dab of light grease on install keeps things running smooth. It's a clean way to modernize an older lower or finish off a fresh build without breaking the bank.
Key Specifications
- Manufacturer: CMMG
- Manufacturer Part Number: 55AFF4D
- UPC: 810046234815
- Product Line: ZEROED
- Type: Ambidextrous Safety Selector
- Throw Options: 60-degree short throw or 90-degree standard
- Adjustment: Reversible barrel
- Platform Fit: AR-15 / AR-10 (Mk4)
- Lever Design: Ambidextrous with serrated levers
- Color: Black
- Country of Origin: Made in USA
- Warranty: CMMG Lifetime Quality Guarantee
What’s Included
- CMMG ZEROED 60/90 ambidextrous safety selector
- Ambidextrous selector levers
- Assembly and installation hardware
Frequently Asked Questions
How do I switch the ZEROED selector between 60 and 90 degrees?
The throw is set by the reversible barrel inside the selector. During installation you simply orient the barrel one way for the standard 90-degree travel or flip it for the 60-degree short throw. If you decide to change later, you just pull it and reinstall it the other way with no extra parts needed.
Will this ambidextrous safety selector fit my AR-10?
Yes. This CMMG ZEROED selector is designed for both AR-15 and AR-10 pattern lowers that use a standard mil-spec safety pocket. As long as your lower follows standard dimensions, it should drop right in.
Is the ZEROED selector good for left-handed shooters?
It is. The fully ambidextrous design puts a lever on each side of the receiver so lefties get real thumb access instead of reaching over the top. You can also decide which side carries the short or long lever so the paddle stays clear of your firing grip.
How hard is it to install this safety selector?
Swapping a safety selector is one of the friendlier AR upgrades for a first-timer, and the needed assembly hardware is included. A little light grease on the barrel during install helps everything cycle smoothly. If you can field strip your rifle, you can handle this one.




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