Big Bore .458 .450 .50 Upper Receiver | Not T Marks | Anodized

AR-15 Upper Receiver

Flat-top Upper Receiver (assembled)

Billet Aluminum.

Black anodized finish,

M-4 feed ramps

Ejection port machined extra wide for the .458 Socom and other large bore calibers.

Made in the USA

Legal Restriction:

Durkin Tactical is currently using a third party vendor to verify the legality of our parts. If you place an order that is not legal in your state, city, town, county, etc., your order will be cancelled, charged a 20% restocking fee and the remainder refunded. Please make sure that your order is legal in the state, city, town, county, etc. it will be shipping to.