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MidwayUSA© MidwayUSA
80Deal ScoreIn Stock

Maxim Defense MDX 508 AR-15 Complete Upper Receiver 300 AAC Blackout 8.5" Barrel Black

$1255.50
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Brand
Maxim Defense
Color
Anodized Black
Caliber
.300 AAC Blackout
Category
Gun Parts
Platform
AR-15
Barrel Length
8.5in
Gun Part Type
Upper Receiver
UPC
680017479299

Overview

The Maxim Defense MDX 508 complete upper receiver is chambered in 300 AAC Blackout and features an 8.5-inch barrel, making it optimized for close-quarters applications. Built to install on any Mil-Spec lower receiver, it utilizes military-grade materials including 7075 and 6061 aluminum and 17-4 stainless steel, along with an HK-height rail for a rigid upper platform. This ready-to-shoot upper comes fully equipped with an armorer-level adjustable gas block and an integrated HATEBRAKE muzzle device, which enhances system reliability and is tucked beneath a 9.5-inch M-slot compatible handguard. The assembly also includes either a Mil-Spec or SCW bolt carrier group, a Radian Raptor charging handle, and a Maxim Defense hand stop.

Price & Stock History

Price — 90d
Listings In Stock — 30d

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Listings

MidwayUSABest Deal
In Stock
$1255.50
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