Description
Battle Arms Development pretty much invented the modular ambi safety for the AR-15, and the Bad-Ass-Pro is the refined version of that idea. It runs a Swiss CNC machined, hardened steel center core with two interchangeable levers, so you can set it up for left-handed, right-handed, or genuinely ambidextrous use. The center gives you both a standard 0 to 90 degree throw and a 0 to 60 degree short throw built into the same reversible core, letting you pick the sweep that feels right for your grip and shooting style.
What Sets the Bad-Ass-Pro Apart
The headline here is the locking system. Instead of the tiny screw heads that strip out or shear off over time, the Bad-Ass-Pro uses a patent-pending dovetail attachment with an internal locking set screw. That screw is self-locking, won't back out, and doesn't need thread-locker to stay put. The result is a lever that locks down solid with no wiggle, which is exactly what you want on a control you're touching every time you shoot. Levers and set screws are steel with a black phosphate finish, and the whole assembly weighs in around three quarters of an ounce.
Fitment and Install Notes for the Bad-Ass-Pro
Compatibility got a lot simpler with this generation. It drops into any lower with mil-spec safety selector hole dimensions and plays nice with the popular aftermarket triggers folks actually run, including Hiperfire, Geissele, CMC, and Timney. You no longer need a short-throw relief cut to run the 60 degree option, since a short-throw marking sticker comes in the kit for lowers that aren't already marked. Install is straightforward with the included wrench, torqued down to spec. One thing worth knowing: the Pro series does not share parts with the older Bad-Ass or CASS safeties, so treat it as its own system.
Made in the USA and backed by a limited lifetime warranty, it's a duty-grade upgrade that suits everything from a home-defense carbine to a competition build.
Key Specifications
- Manufacturer: Battle Arms Development
- Model: Bad-Ass-Pro
- Manufacturer Part Number: BAD-ASS-PRO
- UPC: 810033782541
- Type: Ambidextrous Safety Selector
- Throw Options: Reversible 0-90 and 0-60 degree short throw
- Center Material: Swiss CNC machined hardened steel bar stock
- Lever Material: Investment cast 8620 steel
- Finish: Black phosphate
- Color: Black
- Assembly Weight: 0.74 oz
- Set Screw: 5/64 in hex, self-locking
- Compatibility: Mil-spec AR-15 lower receivers and triggers
- Country of Origin: Made in USA
- Warranty: Limited lifetime
What’s Included
- Reversible steel center core with two set screws
- Standard steel safety lever
- Short steel safety lever
- Two 5/64 in hex set screws
- Install wrench
- Short-throw marking sticker
Frequently Asked Questions
Is the Bad-Ass-Pro a true ambidextrous safety, or just left-hand friendly?
It's fully ambidextrous, with a lever that mounts on both sides of the lower receiver so you can operate the safety with either thumb. The standard and short levers are interchangeable, so you can mix and match to set it up for lefties, righties, or true two-sided use. That flexibility is a big reason left-handed shooters gravitate toward it.
Do I need a short-throw relief cut on my lower to run the 60 degree setting?
No. The Bad-Ass-Pro was designed so you can use the 60 degree short throw on any mil-spec lower without milling a relief cut. If your lower doesn't already have short-throw fire markings, the kit includes a marking sticker so the position reads correctly.
Will the Bad-Ass-Pro work with my aftermarket trigger?
In almost every case, yes. It's built to work with any trigger designed to run a mil-spec AR-15 semi-auto safety, which covers common brands like Hiperfire, Geissele, CMC, and Timney. If your trigger already works with a standard AR safety, this one should drop right in.
How does the locking design prevent the loose levers and stripped screws people complain about?
The Bad-Ass-Pro uses a patent-pending dovetail attachment with an internal locking set screw rather than an exposed screw head that can shear or strip. The screw is self-locking and won't back out, so you don't even need thread-locker. Just torque it to the recommended spec with the included wrench and it stays put.





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