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Mil-Spec trigger and hammer pins
Made in USA Anti-Walk pins
Made in USA Anti-Rotate pins
Anderson Manufacturing AM-556-LPK-GRIP-FIRE-CONTROL Lower Parts Kit + 2 WCA Mil-Spec Trigger/Hammer Pins, (everything but the fire control group and grip)
CMMG 55CA601 Lower Parts Kit, AR15, Gunbuilder's Kit (everything but the trigger and grip)
Also known as the Black Fallout, the RA-140 SST is a high-performing, cost-effective upgrade to replace mil-spec triggers. The Rise Armament Black Fallout RA-140 Super Sporting Trigger is a single stage trigger with a 3.5 lb pull weight. The trigger group is a self contained unit designed to allow you to drop it directly in your lower receiver without the assistance of a gunsmith. Drop in triggers can greatly enhance the accuracy of firearm and are an easy custom upgrade to perform. Manufactured and assembled according to strict AS9100 aerospace requirements. RA-140-BLK does not come with trigger pins. You will need to supply .154" trigger pins, either mil-spec or KNS non-rotating pins both work great. This is a drop-in trigger group, but to ensure best performance the instructions should be read and followed.
Please see the instructions below:
Single-stage trigger system
3.5-lb. pull weight
Clean break with a short reset
Black 8625 hardcoat anodized aluminum cassette
Comfortable, rounded trigger
Manufactured and assembled in our facility according to strict AS9100 aerospace requirements, which are more stringent than standard gun manufacturing requirements
CNC machined from high-grade, heat-treated tool steel and aluminum
Fits most .308 and .223 AR style platforms
Self-contained design makes it easy and quick to install with no fine-tuning needed
KNS pins recommended (available here) but not required. If you do not use KNS pins, be sure to follow step 8 in the installation instructions linked below.
To view installation instructions, watch our tutorial here or read our tutorial here
Note: The set screw should not be tampered with. Any attempts to modify the trigger will void the warranty.