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XTS AR-15 16in 300 BO Complete Upper Receiver w/o BCG Caliber: .300 AAC Blackout, Overall Length: 24.75 in, 10% Off w/ Free S&H

XTS Complete Upper Receiver w/o BCG, AR-15, 300 BO, 24.75in, 16in Barrel, Carbine Length, 1-8 Twist, 5/8x24 Thread, M-LOK Handguard, Bird Cage, Black Nitride Finish, Black, XTSCU16300BK
XTS Complete Upper Receiver w/o BCG, AR-15, 300 BO, 24.75in, 16in Barrel, Carbine Length, 1-8 Twist, 5/8x24 Thread, M-LOK Handguard, Bird Cage, Black Nitride Finish, Black, XTSCU16300BK
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XTS Complete Upper Receiver w/o BCG, AR-15, 300 BO, 24.75in, 16in Barrel, Carbine Length, 1-8 Twist, 5/8x24 Thread, M-LOK Handguard, Bird Cage, Black Nitride Finish, Black, XTSCU16300BK

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Questions & Answers
How much does this SS 16” upper weigh? Also does it matter about the postal or carbine gas tube? I’m putting it on a bushmaster lower. Expert Answer

The XTS AR-15 16in 300 BO Complete Upper Receiver weighs 30.4 ounces. These uppers feature a carbine length gas system. The length of the gas system won't affect functionality with your lower receiver.

by Ethan, Gear Expert, November 28, 2022
View All Q&A You Have a Question? Ask!
Customer Reviews
Most Recent Reviews
Damaged and not OD Green by Patrick Mckown, Verified Owner, January 3, 2024
Does not match my OD Green AR lower receiver. Damaged upon closer look. Poor quality all around.
0/1 found this helpful
Most Recent Reviews
Looks like pink to me by Elkyholic, Verified Owner, April 5, 2023
Definitely not the red in the advertising picture. I’m not sure what was used for the picture, but it definitely was not the upper that I paid for. I’m extremely disappointed in the product that I received.
0/1 found this helpful
Most Recent Reviews
Great upper by May, April 21, 2023
I purchased this upper and I absolutely love it. I bought purple love the color. Adds a little personality to my previous all black AR Made from high quality parts. If I need another black out upper is the future I will purchase this one again.
Read All 3 Reviews
Caliber:
.300 AAC Blackout
Overall Length:
24.75 in
Barrel Length:
16 in
Gas System Length:
Carbine Length
Barrel Twist Rate:
1-8
Firearms Threads Per Inch:
5/8x24
Muzzle Device:
A2 Flash Hider
Finish:
Nitride
Color:
Black
Gun Model:
AR-15
Gas Block Journal Size-Diameter:
.750 in
Handguard Length:
15 in
Barrel Material:
4150 Chrome Moly Vanadium
Weight:
30.4 oz
Condition:
New

Code: 20R-UFH-AR16BOIN-XTSCU16300BK

MPN: XTSCU16300BK

UPC: 767820106496

List: $329.99Save 10%
$295.99

ATTENTION! We currently do not ship this product to P.O. Boxes, AK, CA, CT, DE, HI, MA, NJ, NY, U.S. Territories, or select Colorado locations. Please see our policies for more information or a detailed list of locations.

made-in-usa-flag Made in USA

Help support American manufacturing! Marked models of this product have gone through rigorous review and been certified by the manufacturer as Made in the USA.

Product Info for XTS AR-15 16in 300 BO Complete Upper Receiver w/o BCG

Our complete AR15 16in 300 Blackout upper comes FULLY ASSEMBLED With an Anchor Harvey Upper and an XTS Hand Guard.image

*These XTS complete uppers do not include the Bolt Carrier Group.

Specifications for XTS AR-15 16in 300 BO Complete Upper Receiver w/o BCG:

Manufacturer: XTS
Caliber: .300 AAC Blackout
Overall Length: 24.75 in
Barrel Length: 16 in
Gas System Length: Carbine Length
Barrel Twist Rate: 1-8
Firearms Threads Per Inch: 5/8x24
Muzzle Device: A2 Flash Hider
Finish: Nitride
Color: Black
Gun Model: AR-15
Fabric/Material: Stainless Steel
Gas Block Journal Size-Diameter: .750 in
Handguard Length: 15 in
Handguard Style: Round Rail
Gun Rail: M-LOK
Gun Make: AR Platform
Barrel Material: 4150 Chrome Moly Vanadium
Weight: 30.4 oz
Bolt Carrier Group Included: No
Charging Handle Included: MIL-SPEC
Magazine Included: No
Condition: New
Mount Type: M-LOK
Country of Origin: USA

Package Contents:

  • XTS AR-15 16in 300 BO Complete Upper Receiver w/o BCG
  • Anachor Upper Receiver
  • 5.56 NATO Barrel 16.5in
  • XTS Charging Handle
  • XTS Forward Assist
  • XTS Ejection Port Cover
  • 15in M-LOK
  • Black Gas Block
  • Gas Tube
  • Bird Cage Muzzle Brake

What firearm models does the manufacturer say XTS AR-15 16in 300 BO Complete Upper Receiver w/o BCG is compatible with?

The manufacturer says that XTS AR-15 16in 300 BO Complete Upper Receiver w/o BCG is compatible with AR-15

XTS AR-15 16in 300 BO Complete Upper Receiver w/o BCG Orderable Models

List of Orderable Models

  • XTS Complete Upper Receiver w/o BCG, AR-15, 300 BO, 24.75in, 16in Barrel, Carbine, 1-8 Twist, 5/8x24 Thread, M-LOK, Bird Cage, Black Nitride Finish, XTSCU16300BK , MPN: XTSCU16300BK , UPC: 767820106496 , Code: 20R-UFH-AR16BOIN-XTSCU16300BK

XTS AR-15 16in 300 BO Complete Upper Receiver w/o BCG Unavailable & Discontinued Models

List of Unorderable Models

  • XTS Complete Upper Receiver w/o BCG, AR-15, 300 BO, 24.75in, 16in Barrel, Carbine, 1-8 Twist, 5/8x24 Thread, M-LOK, Bird Cage, Black Nitride Finish, Bronze, XTSCU16300BR , MPN: XTSCU16300BR , UPC: 767820106526 , Code: 20R-UFH-AR16BOIN-XTSCU16300BR
  • XTS Complete Upper Receiver w/o BCG, AR-15, 300 BO, 24.75in, 16in Barrel, Carbine, 1-8 Twist, 5/8x24 Thread, M-LOK, Bird Cage, Black Nitride Finish, Red, XTSCU16300RD , MPN: XTSCU16300RD , UPC: 767820106502 , Code: 20R-UFH-AR16BOIN-XTSCU16300RD
  • XTS Complete Upper Receiver w/o BCG, AR-15, 300 BO, 24.75in, 16in Barrel, Carbine, 1-8 Twist, 5/8x24 Thread, M-LOK, Bird Cage, Black Nitride Finish, OD Green, XTSCU16300OD , MPN: XTSCU16300OD , UPC: 767820106540 , Code: 20R-UFH-AR16BOIN-XTSCU16300OD
  • XTS Complete Upper Receiver w/o BCG, AR-15, 300 BO, 24.75in, 16in Barrel, Carbine, 1-8 Twist, 5/8x24 Thread, M-LOK, Bird Cage, Black Nitride Finish, Blue, XTSCU16300BL , MPN: XTSCU16300BL , UPC: 767820106519 , Code: 20R-UFH-AR16BOIN-XTSCU16300BL
  • XTS Complete Upper Receiver w/o BCG, AR-15, 300 BO, 24.75in, 16in Barrel, Carbine, 1-8 Twist, 5/8x24 Thread, M-LOK, Bird Cage, Black Nitride Finish, Silver, XTSCU16300SL , MPN: XTSCU16300SL , UPC: 767820106533 , Code: 20R-UFH-AR16BOIN-XTSCU16300SL
  • XTS Complete Upper Receiver w/o BCG, AR-15, 300 BO, 24.75in, 16in Barrel, Carbine, 1-8 Twist, 5/8x24 Thread, M-LOK, Bird Cage, Black Nitride Finish, Purple, XTSCU16300PP , MPN: XTSCU16300PP , UPC: 767820106564 , Code: 20R-UFH-AR16BOIN-XTSCU16300PP
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Last updated 2026-09-12 UTC.