AR-15 Trigger & Selector Bundle – Rise RA-434 High Performance Trigger + Atrius Super Selector

AR-15 Trigger & Selector Bundle – Rise RA-434 High Performance Trigger + Atrius Super Selector

This bundle pairs two upgrades that noticeably improve how an AR-15 feels and runs at the controls: the Rise Armament RA-434 High-Performance Drop-In Trigger and the Atrius Development 3 Position Super Selector Safety. The RA-434 is a single-stage cassette trigger built for a smooth press and fast follow-up shots, featuring a 3.5 lb pull, quick reset, and nickel boron-coated internals for reduced friction. The straight trigger blade promotes consistent finger placement and a lighter-feeling pull.

Matched with it is the Atrius selector, offering SAFE / SEMI / SUPER-SEMI positions with a crisp 90° throw and positive detents for confident engagement. Together, this kit is a strong choice for shooters who want a clean trigger break and a more capable selector setup in one package.

Features

• Rise RA-434 single-stage drop-in trigger with 3.5 lb pull
• Nickel boron-coated internals for smoother contact surfaces
• Quick reset and low overtravel for speed
• Straight trigger blade for enhanced control
• Atrius 3-position selector: SAFE / SEMI / SUPER-SEMI
• Positive detents and tactile clicks with a crisp 90° throw
• Fits mil-spec AR-15 lowers/FCGs (.223/5.56/.300 BLK), minor fitment may be needed

Specifications

Trigger (Rise RA-434)

• Type: Single-stage drop-in (cassette)
• Pull Weight: 3.5 lb
• Housing: Black 8625 hardcoat anodized aluminum
• Internals: Heat-treated tool steel with nickel boron coating
• Weight: 2.4 oz
• Notes: KNS pins recommended (not required); use the set screws with any trigger pins per manufacturer guidance

Selector (Atrius Super Selector)

• Positions: SAFE / SEMI / SUPER-SEMI
• Throw Angle: 90°
• Material: Heat-treated 4140 steel
• Finish: Corrosion-resistant finish
• Fitment: Drop-in; minor fitment may be required depending on receiver tolerances