Rise Armament RA-535 Advanced Performance Single Stage AR Rifle Trigger 3.5 lb Curved Silver

The Rise Armament RA-535 Advanced Performance Single Stage AR Rifle Trigger delivers a no-compromise shooting experience built on proven performance principles. This 3.5 lb curved trigger is engineered for shooters who demand crisp, predictable breaks and fast reset without the installation headaches that come with traditional drop-in upgrades. Whether you're running precision rifle drills, competing, or hunting from your AR platform, the RA-535 combines genuine trigger performance with practical ease of use.

What sets the RA-535 apart is the attention to internals that actually matter. The trigger mechanism features zero take-up—meaning the blade starts moving exactly when it contacts the sear, with no slack or wasted pre-travel. The break itself is ultra-crisp, and the reset is fast and tactilely pronounced so you can hear and feel when you're ready for the next shot. Those details compound into tighter groups and genuinely faster follow-ups. The curved blade face suits shooters who prefer a finger-pad contact point rather than a flat surface.

Durability is built into the design. S7 tool steel internals are heat-treated and finished with Nickel Boron (NiB) coating, which reduces friction, increases hardness, and extends service life. The hammer uses a reduced-mass design without sacrificing strike energy—so you get reliable, consistent ignition even with hard-primer ammunition. The housing is precision-machined from 6061 aerospace aluminum billet, ensuring the geometry stays tight and true over thousands of rounds.

Installation into a mil-spec AR lower is straightforward—no special tools or gunsmithing required. The trigger integrates into your existing platform without fuss, so you can focus on shooting rather than troubleshooting.

Key Features

• Single-stage trigger with zero take-up and crisp, clean break
• Fast, audible and tactile reset for rapid follow-up shots
• Curved blade face for traditional finger-pad engagement
• S7 tool steel internals with Nickel Boron coating for durability and smooth operation
• Reduced-mass hammer with full strike energy for reliable primer ignition
• Aerospace-grade 6061 aluminum housing, precision-machined from solid billet
• Compatible with standard mil-spec AR lowers

Specifications

Frequently Asked Questions

Will the RA-535 fit my AR lower?

The RA-535 is designed for standard mil-spec AR lowers. If your lower accepts a mil-spec trigger group, the RA-535 will fit and function without modification.

What's the difference between a curved and flat trigger blade?

The curved blade face on this model contacts your trigger finger pad, offering a traditional shooting feel. Some shooters prefer this geometry for natural finger placement and control.

How fast is the trigger reset?

The RA-535 features a fast, audible and tactilely pronounced reset. You'll hear and feel when the trigger is ready for the next shot, which helps support faster, more confident follow-up shots.

What does the Nickel Boron coating do?

The Nickel Boron (NiB) finish on the S7 tool steel internals reduces friction between moving parts, increases surface hardness to resist wear, and extends the working life of the trigger over thousands of rounds.