Aero Precision Assembled XL Upper Receiver for Big Bore AR-15 – Enlarged Ejection Port

Out of Stock
Orders will Ship within 1 Business Day
Backed by the Aero Precision Warranty!
TOP ADD-ON'S

Faxon Firearms 10.5 inch .458 Socom Barrel – Pistol Gas – 4150 QPQ

$243.80

AR-15 Upper for Big Bore Calibers – .450 Bushmaster, .458 SOCOM, .50 Beowulf

If you’re planning a big bore build for your AR-15, one area that often goes overlooked is the upper.  The brass from .450 Bushmaster, .458 SOCOM,  or .50 Beowulf, won’t fit through a standard AR-15 upper’s ejection port.  Luckily, Aero Precision makes a forged upper receiver that solves this issue, with a port door sized for larger brass casings.

The XL Upper is just like your standard forged upper, with two key differences.  One, the enlarged ejection port opening, plus a laser-engraved “XL” on the rear tang.  Just to make it easy to distinguish from your other upper receivers.

Laser Engraved Tang and Enlarged Ejection Port

Forged From 7075-T6 Aluminum

Just like the other Aero uppers you can trust, the XL is Type III Class 2 hard coat anodized or finished with Magpul FDE Cerakote.  The 7075-T6 aluminum forgings are completely within spec in every other way, ensuring compatibility with other dust covers, forward assists, handguards and more.  The only real difference is the ejection port opening, and the distinguishing “XL” on the tang.

Features:

  • Port door opening enlarged to enhance larger diameter brass ejection (.450 Bushmaster, .458 SOCOM, .50 Beowulf, etc.)
  • Features Laser Marked “XL” designation on the upper receiver tang
  • Compatible with AR15 Lower receivers
  • Compatible with AR15 Port Doors and Forward Assists
  • .250 takedown pin holes
  • Includes port door and forward assist

Specifications:

  • PLATFORM: AR15
  • MATERIAL: Machined from 7075-T6 forged aluminum
  • FINISH: Anodized Black or FDE Cerakote
  • COMPATIBILITY: Works with all Mil-spec AR15/M16 components
  • ENHANCEMENTS: Enlarged ejection port for big bore brass
  • WEIGHT: 8.35oz

Products available on this page:

The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.

If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.

Aero Precision Warranty

If for any reason you have a warranty issue with one of our products, please contact us at 253-272-8188.

Please describe your situation, include your name and order number or transaction id. One of our technical specialists will then review your claim and contact you within 3-5 business days.

If you have images to send, please email them to support@aeroprecisionusa.com

Damaged Items

In regards to claims dealing with damaged or blemished products, we ask that you create a Help Desk Ticket on your My Account page. If you don’t have an account with us, please go to the Contact Us page and fill out the form for review within 72 hours upon receiving the shipment.

If you have images to send, please email them to support@aeroprecisionusa.com

Failed Background Check

There will be a 30% restocking fee on all lower receivers returned because of failed background checks.

Disclaimer: Manufacturer’s warranty is subject to change without prior notice.

Customer Reviews

Based on 1 review
100%
(1)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
P
Philip Rizzuto
Its what I expect from Aero

Essentially the exact same as the standard AR that Aero makes except the ejection port lip is milled down to allow a larger casing (458 socom in this case) out. Honestly the mill work could be better because its not exactly even all the way around but it functions so I cant compain for the cost. A Faxon 458 socom barrel and Geissele mk4 handguard installed with no issues. Id order another if I was doing another big bore build.

Thanks for sharing your feedback! We're glad you're satisfied with your purchase.

Customers who viewed this item also viewed these products

Aero Precision M4E1 Threaded Assembled Upper Receiver for AR-15

Aero Precision M4E1 Threaded Assembled Upper Receiver for AR-15

$159.99
Threaded High-Quality Upper Receiver To Make Your AR Build Stand Out The Aero Precision

FN Five-seveN MRD 5.7X28mm 4.8" Pistol - 20 Round -...

(no reviews yet)
$999.99
FN Five-seveN MRD 5.7x28mm 4.8″ Optics-Ready Pistol The Five-seveN MRD is FN’s latest evolution
Aero Precision M5 .308 Assembled Upper Receiver

Aero Precision M5 .308 Assembled Upper Receiver for AR-10

(no reviews yet)
$194.99
A Sleek & Solid Assembled Upper Receiver For .308 Builds The Aero Precision M5

Faxon Firearms 20 inch .350 Legend AR 15 Gunner Barrel

(no reviews yet)
$216.20
Faxon 20 Inch 350 Legend Barrel Squeeze out extra velocity on your next .350
Aero Precision Upper Receiver Assembled for AR-15 w/ Forward Assist & Dust Cover

Aero Precision Upper Receiver Assembled for AR-15 w/ Forward Assist...

$124.99
High-Quality AR-15 Assembled Upper Receiver With Port Door & Forward Assist The Aero Precision
Duramag AR-15 Stainless Steel 10-Round Magazine - .350 Legend

Duramag AR-15 Stainless Steel 10-Round Magazine - .350 Legend

$15.99
A Legendary Magazine Built For A Legendary Caliber The Duramag AR-15 Stainless Steel 10-Round

Aero Precision M5 Enhanced Assembled AR-10 Upper Receiver with Forward...

(no reviews yet)
$214.67
Enhanced M5E1 Upper with Internal Barrel Nut The Aero Precision M5 Enhanced Upper features
Aero Precision Stripped Upper for AR-15

Aero Precision Stripped Upper for AR-15

$88.99
A Standard Upper With A Perfect Fit & High-Quality Finish The Aero Precision Stripped
Aero Precision Assembled Slick Side AR15 Upper - No Forward Assist

Aero Precision Assembled Slick Side AR-15 Upper Receiver - No...

$89.99
Slick, Simple, and Perfect for a Fat-Free AR Build If you’re tired of looking

Magpul AR-15 Enhanced Ejection Port Cover

$14.20
Easy To Install & More Rugged Polymer Ejection Port Cover from Magpul The Enhanced
CMMG AR-15 Ejection Port Cover Kit

CMMG AR-15 Ejection Port Cover Kit

$9.99
Includes AR-15 ejection port, rod, and spring. Perfect for finishing a stripped upper receiver.
Aero Precision Assembled Slick Side M4E1 Upper - No Forward Assist

Aero Precision Assembled Slick Side AR 15 M4E1 Upper Receiver...

(no reviews yet)
$149.99
Billet-Like Slick Side Upper for Lightweight AR-15 Aero Precision now offers the M4E1 version
Luth-AR AR-15 Ejection Port Cover Assembly - AT3 Tactical

Luth-AR AR-15 Ejection Port Cover Assembly

$6.57
Luth-AR Dust Cover Assembly If you have a stripped AR-15 upper, or need to
Luth-AR Assembled AR-15 Upper Receiver with Charging Handle - AT3 Tactical

Luth-AR Assembled AR-15 Upper Receiver with Charging Handle

(no reviews yet)
$140.95
Luth-AR Mil-Spec Upper with Charging Handle This assembled, forged upper receiver comes with a
VLTOR MUR Upper Receiver with Forward Assist and Ejection Port Cover - AT3 Tactical

VLTOR MUR AR-15 Upper Receiver with Forward Assist and Ejection...

(no reviews yet)
$199.99
VLTOR Enhanced AR-15 Upper with Forward Assist The VLTOR MUR (Modular Upper Receiver) is

Questions & Answers

Don't see the answer
you're looking for?

Loading questions...