{"product_id":"rra-cmplt-mid-a4-upr-450bm-16-5rd","title":"RRA CMPLT MID A4 UPR 450BM 16 5RD","description":"\u003cp\u003eRock River Arms Tactical Carbine, Complete Upper Receiver, 450 Bushmaster, 16 Barrel, Mid-Length Gas System, RRA Operator Muzzle Brake, RRA 13 Free Float M-LOK Handguard, Anodized Finish, Black, Fits AR-15, 5 Rounds, 1 Magazine, Includes Bolt Carrier Group and Charging Handle Assembly 450B0592\n\u003cbr\u003eRock 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.\u003c\/p\u003e","brand":"Rock River Arms","offers":[{"title":"Default Title","offer_id":52778279928090,"sku":"RRA450B0592","price":667.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1005\/3179\/8298\/files\/6012885.jpg?v=1788306916","url":"https:\/\/neshaminyoutfitters.com\/products\/rra-cmplt-mid-a4-upr-450bm-16-5rd","provider":"Neshaminy Outfitters","version":"1.0","type":"link"}