Description
AS Designs ARC Lower for HK MP5K, SP5K, SP89
The ASD ARC Lower allows for faster follow-up shots by resetting after each shot. This is a true drop-in trigger and housing assembly featuring SEMI, ARC, and SAFE selections. Installation is easy; simply add the provided slip trip to your upper and pin on the ARC lower.
Specifications:
- AS Designs ARC-Fire Trigger
- CNC billet machined from 7075-T6 aluminum
- Type III hardcoat anodized
- Custom ejector – 4140 steel, heat-treated, oxide coating
- Custom ejector lever nut/bushing – 4140 steel
- V4 slip trip – 7075-T6 aluminum
- Anti-walk pins
- Mil-spec FCG (hammer and spring)
We cannot ship ARC triggers to the following states: CA, CO, CT, DE, FL, HI, IL, MA, MD, MN, NJ, NY, OR, and RI.









