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Questions & Answers
What's the difference between this sbur04 and the sbur03 upper????? Manufacturer Answer

SBUR04 has a mil-spec front end. SBUR03 (discontinued) was fat up front to match our old handguards. If you buy an SBUR03 it is the same quality of course, but with it being fat up front you can't use a handguard that has rear facing tabs unless those tabs are up high, under the rail.

by Sharps Bros, Manufacturer, December 4, 2024
it says that the receiver will go up to 6.5 grendel, but just to be sure will it go up to 6.8 Remington SPC? Expert Answer

The Sharps Bros SBUR04 Billet Stripped upper is meant for .223, 5.56, .224 Valkyrie, 300 BLK and 6.5 Grendel calibers. Port opening is not large enough for 450 Bushmaster, 458 SOCOM or 50 Beowulf. It would not be compatible with 6.8SPC due to the case length.

by Ethan, Gear Expert, September 26, 2022
Customer Reviews
Helpful Positive Review
Very nice upgrade & was a lil better than expected by Chris, Verified Owner, December 5, 2024
Starting off i was worried that after install there would be some wiggle room between the upper & lower. Im glad that i did get it & the fit, feel & the look turned out to be impressive. The upper & Lower fit together so good that you would think the...
Read More...
3/3 found this helpful
Helpful Positive Review
Sharps upper by EW, Verified Owner, August 22, 2023
Very nice fit and finish. Top notch parts. Purchased lower, sharps handguard and Badlands comp. All of their parts are as good as I’ve seen. Anodizing is dark, consistent and a nice matte finish. Highly recommend sharps as a company.
3/3 found this helpful
Helpful Negative Review
Avoid this manufacturer by P, Verified Owner, September 11, 2025
Avoid this manufacturer. This upper receiver has so much slop even while using a Sharps Bros. lower receiver. Purchased this and a Sharps lower and the fit is horrible. Contacted the manufacturer and all they did was respond with snide remarks on the...
Read More...
4/4 found this helpful
Most Recent Reviews
My first SBR battle rifle by Omar Obenza, Verified Owner, January 20, 2026
This Upper receiver is absolutely insane, I will build one my best battle rifle.
Read All 4 Reviews
Color:
Black
Finish:
Black Anodized
Fabric/Material:
7075-T6 Aluminum
Caliber:
.224 Valkyrie, .300 AAC Blackout, 6.5mm Grendel
Gun Make:
AR Platform
Gun Model:
AR-15
Condition:
New

Code: 3A3-UPR-SBUR04-SBUR04

MPN: SBUR04

UPC: 850869008835

List: $229.95Save $16.20
$213.75

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OP Bucks$7.16

Product Info for Sharps Bros. AR-15 Billet Stripped Upper Receiver w/Forward Assist

The SBUR04 matches all of Sharps Bros. lower receivers perfectly and has a mil-spec front end that is compatible with any AR15 barrel nut and any AR15 handguard out there, including those with rear facing tabs. This receiver is meant for .223, 5.56, .224 Valkyrie, 300 BLK and 6.5 Grendel calibers. Port opening is not large enough for 450 Bushmaster, 458 SOCOM or 50 Beowulf. Made from 7075-T6 just like Sharps Bros. lower receivers. Anodized black. Comes with forward assist kit and dust cover installed.image

Specifications for Sharps Bros. AR-15 Billet Stripped Upper Receiver w/Forward Assist:

Manufacturer: Sharps Bros.
Color: Black
Finish: Black Anodized
Fabric/Material: 7075-T6 Aluminum
Caliber: 6.5mm Grendel, .224 Valkyrie, .300 AAC Blackout
Gun Make: AR Platform
Gun Model: AR-15
Condition: New
Projectile Caliber: .223 Caliber

Features of Sharps Bros. AR-15 Billet Stripped Upper Receiver w/Forward Assist

  • Comes with forward assist kit and dust cover installed.
  • ''SHARPS BROS.'' discretely engraved on both sides.

Package Contents:

  • Sharps Bros. AR-15 Billet Stripped Upper Receiver w/Forward Assist

Sharps Bros. AR-15 Billet Stripped Upper Receiver w/Forward Assist Orderable Models

List of Orderable Models

  • Sharps Bros. AR-15 Billet Stripped Upper Receiver w/Forward Assist, 7075-T6 Aluminum, Black Anodized, SBUR04 , MPN: SBUR04 , UPC: 850869008835 , Code: 3A3-UPR-SBUR04-SBUR04

Sharps Bros. AR-15 Billet Stripped Upper Receiver w/Forward Assist Unavailable & Discontinued Models

List of Unorderable Models

  • DEMO, Sharps Bros. AR-15 Billet Stripped Upper Receiver w/Forward Assist, 7075-T6 Aluminum, Black Anodized, SBUR04 , MPN: SBUR04-DEMO , Code: 3A3-UPR-SBUR04-SBUR04-DEMO
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