Harrington & Richardson 604 "Air Force" Complete Upper, 1/12, Black
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Harrington & Richardson 604 Air Force Complete Upper. Includes a 20" parkerized 5.56 NATO barrel, rifle-length gas system, and C158 bolt carrier group (BCG). Black anodized slick-sided upper receiver. Fits standard AR-15 lower receivers. Twist rate: 1/12.
Specifications
- Manufacturer:
- Harrington & Richardson
- Category:
- upper-receiver
- Platforms:
- AR-15
- Required Component:
- Yes
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