AR-15 UPPER RECEIVERS
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Aero Precision M4E1 Complete Upper - 14.5" Mid-Length - M-LOK - 5.56mm
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This complete upper includes our ATLAS S-ONE Handguard! The S-ONE line of handguards are designed with size and weight in mind, providing the perfect addition to your lightweight build. Our proprietary ATLAS attachment system is a durable and dependable mounting platform, maintaining a slim profile while still providing the strength and stability customers have grown to love from Aero Precision handguards. We've taken the pain out of building a legal 14.5" rifle build. These pinned and welded 14.5" complete uppers feature an Epsilon 556SL that is permanently affixed to the muzzle providing an overall legal length of 16". Worried you might want to change your gas block? No worries! The outer diameter of the Epsilon 556SL allows you to easily slide your gas block over the muzzle device making it easy to change or service your gas system. If you've had a 14.5" build planned, but didn't want to deal with the hassle of getting it pinned and welded or being stuck with a specific configuration, then our 14.5 pinned and welded barrels/uppers are for you! INCLUDES:
M4E1 THREADED UPPER RECEIVER FEATURES:
ATLAS S-ONE HANDGUARD FEATURES:
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APAR700304M68
Out of stock
Aero Precision M4E1 Complete Upper - 16" Mid-Length - M-LOK - 5.56mm
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This complete upper receiver incudes an HBAR profile barrel that is laser marked "HBAR". INCLUDES:
M4E1 THREADED UPPER FEATURES:
ATLAS S-ONE HANDGUARD FEATURES:
16" 5.56 HBAR BARREL
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APAR700105M97
Out of stock
Daniel Defense MK18 Upper Reciever - 5.56mm
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The MK18 AR15 style Upper Receiver Group is unmatched in size, weight, and performance, and features the picatinny quad rail Daniel Defense provides to USSOCOM. The RIS II rail features a Bolt-Up System that has been rigorously tested prior to fielding by USSOCOM. The 10.3 inch Cold Hammer Forged barrel is the same length in use for the MK18 upper most commonly used for CQB operations. Its independently ambi GRIP-N-RIP Charging Handle accommodates left- and right-handed shooters. All Daniel Defense complete upper receiver groups come standard with an M16 profile bolt carrier group. |
23-004-08013-011
Out of stock
White Label Armory AR15 Complete Premium Upper Receiver—16" Barrel, 15" M-LOK Handguard, 5.56 NATO
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The perfect complete upper for your lower, without all the tools required to build it. White Label Armory's complete upper receivers are made from the highest quality American-made components. In-house at DRG Manufacturing we produce the barrel, handguard, upper receiver and BCG. Each complete upper is assembled by WLA's gunsmiths and fully tested to ensure that your build will function the first time. Compatible with any Mil-Spec dimensions AR15 lower receiver. Complete Upper Receiver Includes:
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4027-3410-006
Out of stock
AR-15 Upper Receivers
Find the Upper Receiver Parts You Need for your AR-15 Gun
Customize or begin building sooner with our AR-15 Upper Receivers. We have receivers boasting hard chrome-lined chambers and bores that deliver exceptional endurance and easier maintenance. Choose from a fast 1:7 twist or the popular 1:9 rate in our selection of AR-15 upper receivers. Top names in receiver manufacturing are here, including Rock River Arms, CMMG, and ArmaLite. These makers emphasize testing prior to shipment for your satisfaction. CMMG conducts magnetic particle testing on its barrels, a process which reveals tiny flaws. Order a Carbine Upper Receiver with M4 feed ramps and Bird Cage flash suppressor from this manufacturer.
Get the Rifle You Really Want with AR-15 Upper Receiver Parts
Make a match rifle or a versatile hunting firearm with AR-15 upper receiver parts. The AR15’s modular structure allows you to modify its design to meet your aspirations. Find a flat top so you can reconfigure as needed. We carry an M4 version of the AR15 carbine – its flat top provides a range of sighting options. Many of our AR-15 upper receiver parts are made from higher grade, mil-spec steel and work with existing mil-spec lowers. We’re also your superlative source for AR 15 parts sold individually, from charging handle assemblies to sling mounts.
AR-15 Upper Receiver Assembly Ensures Components Coincide
When you want the complete package, we’re here with assemblies! You can opt for an AR-15 Upper Receiver Assembly featuring a 16-inch barrel and a 1:9 twist, paired with a flash suppressor, mount, bolt assembly and charging handle. A dedicated bolt to match the upper assembly is important to the workings of your AR-15. You’ll also benefit from a handle matched to your barrel. Choose AR-15 upper receiver assemblies backed by precision manufacturing to add to your rifle or when building a firearm from square one.