The Doublestar lower parts kit has the American-made parts needed to complete a small-pin AR-15 lower receiver in 5.56. The fire control group is mil-spec heat-treated 8620 steel, finished on all contact points for a smooth, crisp pull with minimal creep. The kit includes an extra takedown detent and spring.
- Type: Lower parts kit
- Fits: AR-15 (5.56), small pin
- Fire control group: Mil-spec heat-treated 8620 steel
- Includes: Extra takedown detent and spring
- Pins: Coiled steel spring pins
- Color: Black
- Manufacturer part #: AR270
