The RA-140 SST (“Black Fallout”) from Rise Armament is a high-performing, cost-effective upgrade to replace mil-spec triggers. This single-stage trigger system has a 3.5 lb pull weight with a clean brake and short reset.    Features:

Black 8625 hardcoat anodized aluminum cassette
Comfortable, rounded trigger
Unit weight: 2.6 oz.
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 (Not recommended for Sig MPX)
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 (link in the media tab). The set screws should be used with any trigger pins

Manufacturer Part Number: RA-140 SST