Fortis SLS Fifty Ambidextrous Safety Selector – FDE (50/90 Degree)

Description

If you've ever had a safety selector lever work itself loose mid-range trip, you already know the appeal here. The Fortis SLS Fifty ditches the usual socket or Torx screws and instead locks the aluminum levers onto the steel core with a patent-pending RidgeKey mechanism. That means a solid point of contact, no visible screws, and no nagging worry about a lever backing out or snapping on you. It's a clean-looking, no-nonsense upgrade over a mushy mil-spec safety.

What Sets the SLS Fifty Apart

The core is machined from 4140 steel and finished in black nitride, which gives you a smooth bearing surface and strong wear resistance where it counts. The ambidextrous levers are 6061-T6 aluminum with a skeletonized cutout that lets the steel core peek through, and they wear a Flat Dark Earth anodized finish to match tan and FDE builds. Strategically placed serrations give your thumb plenty of grip, and folks who run gloves have noted the texture holds up well during fast manipulations.

Dialing In Your SLS Fifty Throw

One of the best parts of this selector is the built-in choice between a 50-degree and 90-degree throw. The shorter 50-degree throw makes for quicker, snappier transitions between safe and fire, while the traditional 90 keeps things familiar if that's what you're used to. The levers also include set screws that let you fine-tune exactly where each one points, so you can get safe sitting perfectly parallel and fire dead perpendicular. It's the kind of detail that makes particular builders happy.

Fit and Setup Notes for the SLS Fifty

This drops into any mil-spec AR-15 or AR-style lower receiver. Keep in mind a detent and spring are not included, so plan on using the ones from your lower parts kit. A dab of quality grease on the detent tip during install goes a long way, and after cycling it a few dozen times the action smooths right out into that crisp, positive feel Fortis is known for. Made in the USA.