Rise Armament 4.5 Pound Two-Stage Trigger – Includes Mil-Spec Trigger and Hammer Pins – Flat or Curved

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Rise Armament RA-100 Two-Stage Trigger: 4.5 lb Duty-Grade with S7 Tool Steel

Features

4.5 lb two-stage pull (2 lb first stage, 2.5 lb second stage)
Precision-machined from S7 tool steel
Heat-treated with black nitride finish
Strong hammer spring for reliable primer strikes with steel-cased ammo
Fast, tactile reset – felt and heard
Simplified installation – fewer parts than traditional triggers
Mil-Spec trigger and hammer pins included
Fits AR-15 and AR-10 platforms with standard small-pin dimensions
Engineered for harsh conditions
Available in curved or flat trigger face

The Rise Armament RA-100 two-stage trigger solves the duty-grade reliability problem with S7 tool steel construction and a strong hammer spring that ignites even hard primers. This trigger works well for law enforcement and military users needing mil-spec reliability with better performance, shooters running steel-cased ammo requiring consistent ignition, and anyone wanting a true workhorse trigger that handles abuse. The 2 lb first stage transitions cleanly into a 2.5 lb second stage with a fast, audible reset – bringing duty-grade durability to your AR platform without the complexity of traditional component triggers.

Specifications

Brand: Rise Armament
Model: RA-100 Two-Stage Trigger
Platform: AR-15 / AR-10
Pin Size: Mil-Spec (Small Pin)
Trigger Type: Two-Stage
Pull Weight: 4.5 lbs Total
First Stage: 2 lbs
Second Stage: 2.5 lbs
Material: S7 Tool Steel
Finish: Black Nitride
Available Configurations:
- Curved (MPN: RA-100)
- Flat (MPN: RA-100F)

What’s Included

1x RA-100 two-stage trigger assembly
Mil-Spec trigger pin
Mil-Spec hammer pin

Products available on this page:

The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.

If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.

Rise Armament Lifetime Warranty

We have no doubt you’ll love our products. We’re so confident that we’ll let you buy—and try—our products with no risk. If you are not 100% satisfied with your purchase, please return the item to the address below for a refund or replacement within 30 days. That’s right. You can buy a gun or accessory, shoot it, and return it if you aren’t completely satisfied.
You must include a completed return form with your return. The product must be undamaged and in its original condition. Return it with the receipt in its original, unaltered packaging and with all included material such as manuals, decals, kits, etc.
You are responsible for packaging the product so it is not damaged during shipping. To help ensure the product is not damaged, we recommend returning it in its original shipping box and packing materials. You may be charged for any damaged or lost items.
Although you may return fired products, you may not return products that have been altered or modified. RISE Armament is not responsible for lost return shipments.

Manufacturing Guarantee

Our products are backed by a lifetime guarantee. If you have any issues with a RISE Armament product, please email us at racustomerservice@risearmament.com. If there is a manufacturing defect, we will provide a replacement or refund—whichever you prefer.