AR-15 upper receiver

First Look: SilencerCo SCO15 Upper Receiver

SilencerCo is now adding to its line of AR-15 parts and is offering the SCO15 upper as a compliment to your SilencerCo lower receiver.

Building a Home-Defense AR Upper

Although it's not as tough to find a new AR for sale as it was a year ago, the carbines crowding the racks of your local gunshop may not have the features you want. One solution is to build an AR configured exactly to your liking.

MR556A1 Upper Receiver Kit

The MR556A1 Upper Receiver Kit allows high quality AR-style rifles to be retrofitted to HK's famous pusher rod operating system.

Review: BRN-180S Gen2 300 BLK Complete Upper Receiver

Brownells new upper assembly allows you to convert your mil-spec AR-pattern pistol to 300 BLK and back.

XS Sight Systems AR-15 Armorer's Block

Whether building your own or simply adding optics, having a solid mount for your upper is critical.

First Look: CMMG Mk4 AR-15 in .22 Nosler

CMMG expanded its Mk4 rifle lineup with several new AR-15 models chambered in the enhanced .22 Nosler cartridge.

First Look: ODIN Works AR-15 Billet Upper Receiver

This all-new upper receiver design from ODIN Works is a sleek choice for your next AR-15 build.

WATCH: SIG Sauer SUR300 Suppressed Upper Receiver

Compatible with the company's MCX lower receivers, the SIG Sauer SUR300 provides a 16.1-inch system complete with a pinned-and-welded suppressor.

New for 2018: McCutchen Firearms .50 BMG MF-50 Upper Receiver

Made to mount on any mil-spec AR-15 lower receiver, the McCutchen Firearms .50 BMG MF-50 upper receiver is built for safety and accuracy.

First Look: Real Avid Lug-Lok AR-15 Vise Block

Secure your AR-15 upper receiver on your workbench for maintenance and modification with the all-new Lug-Lok Vise Block from Real Avid.

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