Name: Radical Firearms RF Upper Assembly 8.5in 300 AAC HBAR Contour w/ A2 Flash Hider
SKU: 2CS-UFH-URCFH85AAC
Rating: 4.5 (2 reviews)

Image of USED Radical Firearms RF Upper Assembly 8.5in 300 AAC HBAR Contour, 1/7 Twist, 7in FGS, MOE, A2 Flash Hider, Black, FU8.5-300HBAR-7FGS, EDEMO1, Condition Parts Only/Salvage, Wrong Product

USED Radical Firearms RF Upper Assembly 8.5in 300 AAC HBAR Contour, 1/7 Twist, 7in FGS, MOE, A2 Flash Hider, Black, FU8.5-300HBAR-7FGS, EDEMO1, Condition Parts Only/Salvage, Wrong Product

Radical Firearms RF Upper Assembly 8.5in 300 AAC HBAR Contour, 1/7 Twist, 7in MHR, M-LOK, A2 Flash Hider, Black, FU8.5-300HBAR-7MHR

Radical Firearms RF Upper Assembly 8.5in 300 AAC HBAR Contour, 1/7 Twist, 7in RPR, M-LOK, A2 Flash Hider, Black, FU8.5-300HBAR-7RPR

Radical Firearms RF Upper Assembly 8.5in 300 AAC HBAR Contour, 1/7 Twist, 7in MHR, M-LOK, A2 Flash Hider, Black, FU8.5-300HBAR-7MHR

Radical Firearms RF Upper Assembly 8.5in 300 AAC HBAR Contour, 1/7 Twist, 7in RPR, M-LOK, A2 Flash Hider, Black, FU8.5-300HBAR-7RPR

Government Export Restriction

This item may be regulated for export by the U.S. Department of State or the U.S. Department of Commerce. Please see our Export Policy prior to placing your order.

Government Restriction

By adding to cart, I understand and agree to the Domestic Restricted Product Policy and certify that I will comply with applicable federal, state and local laws and regulations.

Questions & Answers

What is the thread size for flash hider? Expert Answer

The Radical Firearms RF Upper Assembly uses 5/8x24 threads and will be compatible with .30 cal muzzle devices.

by Ethan, Gear Expert, February 3, 2023

What is the thread pitch? Expert Answer

These Radical Firearms RF Upper Assembly 8.5in 300 AAC HBAR Contour uppers have a barrel threaded for 5/8x24.

by Hunter, Gear Expert, October 7, 2022

View All Q&A You Have a Question? Ask!

Customer Reviews

Helpful Positive Review

This Upper is actually 1/8" twist rate not 1/7" as advertised by wisegsmith, Verified Owner, October 5, 2022

Optics Planet should change the product description to 1/8" twist rate not 1/7" (as of Oct 2022). The barrel on my new Radical Firearms .300 AAC BLK 8.5" upper is clearly marked "300 BLK 1/8" so I called Optics Planet to inquire. They opened an inqui...
Read More...

2/3 found this helpful

Most Recent Reviews

Radical Firearms 8.5" 300 AAC Upper by Troy, Verified Owner, April 24, 2025

Says it used, but it looks brand new.It fits and matches my Radical lowers perfectly. It's more accurate and consistent than expected.

Read All 2 Reviews

Caliber:: .300 AAC Blackout
Barrel Length:: 8.5 in
Barrel Profile:: HBAR Contour
Gas System Length:: Pistol Length
Barrel Twist Rate:: 1-7
Handguard Type:: Free-Float
Muzzle Device:: A2 Flash Hider
Finish:: Anodized
Color:: Black
Gas Block Journal Size-Diameter:: .750 in
Handguard Length:: 7 in
Handguard Style:: Round Rail
Gun Rail:: Magpul MOE
Barrel Material:: 4140 Chrome Moly Vanadium
Magazine Included:: No
Condition Details:: Wrong Product
Condition Quality:: Parts Only/Salvage
Condition:: Factory DEMO
Additional Features:: A2 Flash Hider
Included Accessories:: 7in Forward Guard Shield - FGS, EDEMO1
Model:: 7in Forward Guard Shield - FGS
Threads per Inch:: 5/8x24

Code: 2CS-UFH-URCFH85AAC-FU8-5-300HBAR-7FGS-EDEMO-WP-F

MPN: FU8.5-300HBAR-7FGS-EDEMO1

Product No Longer Available

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Product Info for Radical Firearms RF Upper Assembly 8.5in 300 AAC HBAR Contour w/ A2 Flash Hider

The Radical Firearms 8.5" Hbar profile 300 AAC Blackout is a MIL-STD upper ready to drop on any MIL-STD lower Receiver. Perfect for the novice or advanced shooter wanting to finish out that build and hit the range.Simply add your BCG, charging handle and you are ready to go. Built with our 7" free float rail system for increased accuracy and keeping your hands cool. No matter what your style of shooting is, Radical Firearms has you covered.

Package Contents:

Radical Firearms RF Upper Assembly 8.5in 300 AAC HBAR Contour w/ A2 Flash Hider

Ammunition

1–39 / 39

Freedom Munitions HUSH Subsonic .300 Blackout 220 Grain HPBT Brass Rifle Ammo, 50 Rounds, FMH300H220N50

(2)

List: $63.19 (Save 19%)

$50.99

$1.02/Round

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Freedom Munitions .300 Blackout 147 Grain Full Metal Jacket Brass Rifle Ammunition

Freedom Munitions .300 Blackout 150 Grain Full Metal Jacket Brass Rifle Ammunition

(4)

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Hornady Frontier .300 AAC Blackout 125 Grain Full Metal Jacket Centerfire Rifle Ammunition

(6)

As Low As (Save Up to 29%)

Hornady Subsonic .300 AAC Blackout 190 grain Subsonic eXpanding Brass Cased Centerfire Rifle Ammo, 20 Rounds, 80877

(25)

List: $44.80 (Save 16%)

$37.49

$1.87/Round

Remington .300 AAC Blackout UMC 220 Grain Open Tip Flat Base Brass Centerfire Rifle Ammunition

(3)

As Low As (Save Up to 22%)

$279.49

$1.52 - $1.75/Round

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Super Vel Ammunition 300 Blackout 150 grain Full Metal Jacket Brass Cased Rifle Ammunition

As Low As (Save Up to 31%)

$40.29

$0.81/Round

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Super Vel Ammunition 300 Blackout 200 grain Full Metal Jacket Brass Cased Rifle Ammunition

As Low As (Save Up to 24%)

Armscor Precision Inc USA .300 AAC Blackout 147 Grain Full Metal Jacket Brass Cased Rifle Ammo, 20 Rounds, FAC300AAC-1N-20RD

(14)

List: $23.99 (Save 40%)

$14.49

$0.72/Round

Barnes Precision Match .300 AAC Blackout 125 grain Match Burner Open Tip Match Boat Tail Centerfire Rifle Ammunition

(1)

As Low As (Save Up to 10%)

Remington .300 AAC Blackout 150 Grains Full Metal Jacketed Brass Centerfire Rifle Ammunition

(2)

As Low As (Save Up to 13%)

Hornady BLACK .300 AAC Blackout 208 Grain ELD Brass Cased Rifle Ammo, 20 Rounds, 80891

(8)

List: $42.92 (Save 29%)

$30.49

$1.52/Round

Remington UMC Rifle .300 AAC Blackout 220 Grain Open Tip Flat Base Centerfire Rifle Ammunition

(1)

As Low As (Save Up to 11%)

Hornady BLACK .300 AAC Blackout 110 grain V-MAX Brass Cased Centerfire Rifle Ammo, 20 Rounds, 80873

(10)

List: $42.47 (Save 33%)

$28.39

$1.42/Round

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Barnes Vor-TxRifle Cartridges, .300 AAC Blackout, TAC-TX Flat Base, 110 Grain, 20 - Rounds, 21548

(7)

List: $48.99 (Save 10%)

$43.99

$2.20/Round

Wilson Combat Hornady ELD-M .300 AAC Blackout 208 Grain Brass Cased Pistol Ammo, 20 Round, A300BLK-208-ELDM-20RD

List: $39.95 (Save 12%)

$34.99

$1.75/Round

SinterFire Reduced Hazard .300 AAC Blackout 110 Grain Frangible Brass Cased Rifle Ammo, 50 Rounds, SF300BLK110RHA

(3)

List: $50.69 (Save 16%)

$42.49

$0.85/Round

Best Rated

Winchester Deer Season XP .300 AAC Blackout 150 grain Extreme Point Polymer Tip Centerfire Rifle Ammo, 20 Rounds, X300BLKDS

Sellier & Bellot .300 Aac Blackout Fmj - SB300BLKACS

List: $1,132.00 (Save 17%)

$944.49

$0.94/Round

Barnes Vor-TxRifle Cartridges, .300 AAC Blackout, TAC-TX Boat Tail , 120 Grain, 20 - Rounds, 30827

List: $48.99 (Save 16%)

$41.39

$2.07/Round

On Sale

Federal Premium Power-Shok Copper .300 AAC Blackout 120 Grain Copper Hollow Point Centerfire Rifle Ammo, 20 Rounds, 300BLK120LFA

List: $47.99 (Save 28%)

$34.69

$1.73/Round

Wilson Combat Sierra .300 AAC Blackout 220 Grain Hollow Point Boat Tail Brass Cased Pistol Ammo, 20 Round, A300BLK-220-HPBT-20RD

(1)

List: $44.95 (Save 13%)

$39.29

$1.96/Round

Nosler Varmageddon .300 AAC Blackout 110 Grain Flat Base Tipped Brass Cased Centerfire Rifle Ammo, 20 Rounds, 40127

(1)

List: $43.95 (Save $3.96)

$39.99

$2.00/Round

Federal Premium Power-Shok .300 AAC Blackout 150 Grain Soft Point Centerfire Rifle Ammo, 20 Rounds, 300BLKB

List: $40.99 (Save 20%)

$32.99

$1.65/Round

Fort Scott Munitions 300AAC BLACKOUT 190 Grain Centerfire Rifle Ammo, 20 Rounds, 300-190-SCV1SS

(4)

List: $38.15 (Save $2.66)

$35.49

$1.77/Round

Hornady Frontier 300 Blackout 208 Grain FMJ Brass Cased Rifle Ammo, 20 Rounds, FR410

List: $36.25 (Save 10%)

$32.49

$1.62/Round

Hornady Custom .300 AAC Blackout 135 grain Flex Tip eXpanding Brass Cased Centerfire Rifle Ammo, 20 Rounds, 80881

(3)

List: $49.53 (Save 16%)

$41.49

$2.07/Round

SIG SAUER .300 AAC Blackout 110 Grain Tac-TX Brass Cased Rifle Ammo, 20 Rounds, C300D1-20

List: $44.99 (Save 12%)

$39.39

$1.97/Round

Final Sale

Fort Scott Munitions .300 BlackOut 150 Grain CNC Machined Copper Brass Riffle Ammo, 20 Rounds, 300-150-SCV

List: $37.32 (Save $2.54)

$34.78

$1.74/Round

SinterFire GreenLine .300 AAC Blackout 110 Grain Frangible Brass Rifle Ammo, 50 Rounds, SF300BLK110GL-C

(1)

List: $52.79 (Save 17%)

$43.99

$0.88/Round

Hsm Ammunition Hsm Ammo .300aac Blackout 110gr. Hornady V-max 20-pack

(2)

List: $45.49 (Save 40%)

$27.49

$1.37/Round

Barnes Precision Match .300 AAC Blackout 220 Grain Jacketed Hollow Point Brass Rifle Ammo, 20 Rounds, BB300BLKM2

(1)

List: $45.99 (Save 10%)

$41.29

$2.06/Round

Hornady Ammo Custom, .300 Blackout, 110 Grain, Centerfire Rifle Ammo, CX Polymer Tip, 20 Rounds, 808794

(4)

List: $50.84 (Save 16%)

$42.49

$2.12/Round

Nosler .300 AAC Blackout, Ballistic Tip , 125 grain, Brass Cased, 20 Rounds, 61032

List: $48.95 (Save 10%)

$43.99

$2.20/Round

HSM 300BLK4N Match 300 Blackout 220 Gr Hollow Point Boat Tail HPBT

List: $69.17 (Save 49%)

$35.39

$1.77/Round

Veteran Ammo Defense .300 AAC Blackout 110 Grain Hollow Point Centerfire Pistol Ammo, 20 Rounds, HMBX-300-26

List: $53.49 (Save 22%)

$41.49

$2.07/Round

Veteran Ammo Defense .300 AAC Blackout 200 Grain Hollow Point Centerfire Pistol Ammo, 20 Rounds, HMBX-300-27

List: $59.99 (Save 18%)

$48.99

$2.45/Round

Freedom Munitions .300 Blackout 125 Grain Full Metal Jacket Brass Rifle Ammo, 50 Rounds, FM300F125N50

(1)

List: $37.19 (Save 11%)

$32.99

$0.66/Round

Best Rated

Winchester Super Suppressed .300 AAC Blackout 200 grain Full Metal Jacket Centerfire Rifle Ammo, 20 Rounds, SUP300BLK

(20)

List: $34.99 (Save 44%)

$19.49

$0.97/Round

Ammo Boxes

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DFCO Kung Fu Grip Plug (20) List: $12.00 (Save 10%) $10.80 12% Bonus Bucks

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