Rock River Arms A4 mid-length upper comes chambered in .450 Bushmaster with a 16″ chrome moly 1/24 twist barrel. Additionally this upper includes a RRA 13″ M-Lok compatible lightweight free float rail and a RRA Operator Brake (5/8-32 thread). This is a complete upper with bolt carrier group” charging handle assembly and a 5 round magazine.
$695.99
11 in stock
Rock River Arms A4 mid-length upper comes chambered in .450 Bushmaster with a 16″ chrome moly 1/24 twist barrel. Additionally this upper includes a RRA 13″ M-Lok compatible lightweight free float rail and a RRA Operator Brake (5/8-32 thread). This is a complete upper with bolt carrier group” charging handle assembly and a 5 round magazine.
| Weight | 6.4375 lbs |
|---|---|
| Dimensions | 32 × 5.5 × 5.5 in |
| barrel_length | 16 |
| capacity | 5 Rounds |
| caliber | 450 Bushmaster |
| manufacturer | Rock River Arms |
| model | Tactical Carbine |
| product_type | Upper |
| color | Black |
| upc | 842834125548 |
| brand | Rock River Arms |
| part_number | 450B0592 |
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