Radical Firearms 10.5 in. 300 AAC Blackout Upper Assembly

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Radical Firearms Gun Parts Radical Firearms 10.5 in. 300 AAC Blackout Upper Assembly Radical Firearms Gun Parts AR 15 Parts AR15 Upper Receivers Radical Firearms 10.5 in. 300 AAC Blackout Upper Assembly Radical Firearms Gun Parts Rifle Parts AR 15 Parts AR15 Upper Receivers Radical Firearms 10.5 in. 300 AAC Blackout Upper Assembly Radical Firearms Gun Parts AR 15 Parts Radical Firearms 10.5 in. 300 AAC Blackout Upper Assembly Radical Firearms Gun Parts Rifle Parts AR 15 Parts Radical Firearms 10.5 in. 300 AAC Blackout Upper Assembly Radical Firearms Gun Parts Rifle Parts Radical Firearms 10.5 in. 300 AAC Blackout Upper Assembly

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Radical Firearms Upper Assembly 10.5 inch 300 AAC HBAR Contour, 10 inch FCR, A2 FH, w/o BCG and CH, Black, FU10.5-300HBAR-10FCR

Radical Firearms Upper Assembly 10.5 inch 300 AAC HBAR Contour, 10 inch FQR, Black FU10.5-300HBAR-10FQR

Radical Firearms Upper Assembly 10.5 inch 300 AAC HBAR Contour, 9 inch FHR, Black FU10.5-300HBAR-9FHR

Radical Firearms Upper Assembly 10.5 inch 300 AAC HBAR Contour, 10 inch FTR, w/o BCG and CH, Black, FU10.5-300HBAR-10FTR

Radical Firearms Upper Assembly 10.5 inch 300 AAC HBAR Contour, 10 inch FQR, w/BCG and CH, Black, CFU10.5-300HBAR-10FQR

Radical Firearms Upper Assembly 10.5 inch 300 AAC HBAR Contour, 9 inch FHR, w/BCG and CH, Black, CFU10.5-300HBAR-9FHR

Radical Firearms Upper Assembly 10.5 inch 300 AAC HBAR Contour, 10 inch FTR, w/BCG and CH, Black, CFU10.5-300HBAR-10FTR

Radical Firearms Upper Assembly 10.5 inch 300 AAC HBAR Contour, 10 inch FCR, A2 FH, w/o BCG and CH, Black, FU10.5-300HBAR-10FCR

Radical Firearms Upper Assembly 10.5 inch 300 AAC HBAR Contour, 10 inch FQR, Black FU10.5-300HBAR-10FQR

Radical Firearms Upper Assembly 10.5 inch 300 AAC HBAR Contour, 9 inch FHR, Black FU10.5-300HBAR-9FHR

Radical Firearms Upper Assembly 10.5 inch 300 AAC HBAR Contour, 10 inch FTR, w/o BCG and CH, Black, FU10.5-300HBAR-10FTR

Radical Firearms Upper Assembly 10.5 inch 300 AAC HBAR Contour, 10 inch FQR, w/BCG and CH, Black, CFU10.5-300HBAR-10FQR

Radical Firearms Upper Assembly 10.5 inch 300 AAC HBAR Contour, 9 inch FHR, w/BCG and CH, Black, CFU10.5-300HBAR-9FHR

Radical Firearms Upper Assembly 10.5 inch 300 AAC HBAR Contour, 10 inch FTR, w/BCG and CH, Black, CFU10.5-300HBAR-10FTR

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Radical Firearms Upper Assembly 10.5 inch 300 AAC HBAR Contour, 10 inch FCR, A2 FH, w/o BCG and CH, Black, FU10.5-300HBAR-10FCR

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Radical Firearms Upper Assembly 10.5 inch 300 AAC HBAR Contour, 10 inch FQR, Black FU10.5-300HBAR-10FQR

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Radical Firearms Upper Assembly 10.5 inch 300 AAC HBAR Contour, 9 inch FHR, Black FU10.5-300HBAR-9FHR

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Radical Firearms Upper Assembly 10.5 inch 300 AAC HBAR Contour, 10 inch FTR, w/o BCG and CH, Black, FU10.5-300HBAR-10FTR

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Radical Firearms Upper Assembly 10.5 inch 300 AAC HBAR Contour, 10 inch FQR, w/BCG and CH, Black, CFU10.5-300HBAR-10FQR

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Radical Firearms Upper Assembly 10.5 inch 300 AAC HBAR Contour, 9 inch FHR, w/BCG and CH, Black, CFU10.5-300HBAR-9FHR

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Radical Firearms Upper Assembly 10.5 inch 300 AAC HBAR Contour, 10 inch FTR, w/BCG and CH, Black, CFU10.5-300HBAR-10FTR

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Questions & Answers

What’s the thread pitch of the muzzle device? I ordered this with a Silencerco ASR flash suppressor in 7.62 but it definitely doesn’t fit. Featured Answer

5/8 x 24 is the pitch

by Krischan, Verified Owner, March 24, 2019

See 1 More Answer

Radical 10.5 in 300 AAC Blackout ad say BCG & Charging Handle are included, info below say they are extra. Are they included or not? Expert Answer

The Radical Firearms 10.5 in. 300 AAC Blackout Upper Assembly (MPN:CFU10.5-300HBAR-10FQR) and (MPN:CFU10.5-300HBAR-9FHR), are the only two models that include a BCG and Charging Handle.

by Ethan, Gear Expert, June 13, 2022

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

Customer Reviews

Helpful Positive Review

Price can't be beat by Zach, Verified Owner, April 19, 2018

Fit and finish was what you would expect. No issues. It came packaged nice and was oiled down. Went right on my PSA pistol lower without a problem. Shipping was quick and hastle free as always from opticsplanet.

9/9 found this helpful

Helpful Positive Review

Happy customer by David, October 1, 2018

The upper bolted right up with my lower no problems assembling. Function seems flawless so far. Fit and finish are very good and seems to be a solid piece. I would recommend it to others looking to build a budget weapon.

4/4 found this helpful

Helpful Positive Review

Great upper! by Keifer, November 22, 2018

This upper surpassed my expectations by miles. It is very well built and functions flawlessly. For the price, you can't beat it. I plan on buying another on 5.56 soon. Thanks to optics planet and radical for being awesome.

4/4 found this helpful

Helpful Positive Review

Handguard was different than pictured by Evrev, Verified Owner, July 8, 2019

Handguard on what I received was different than the picture listed, it was still mlok same length etc but the one I got extends down below the takedown pin holes instead of being even with the bottom of the lower edge of the upper.. it's completely a...
Read More...

5/5 found this helpful

Helpful Positive Review

Solid setup by gijohnny223, Verified Owner, April 25, 2018

I purchased this upper for a pistol build and it is 100% No failures shoots consistent groups out to 75 yards. I have no plans on using it for anything further than that. This is with 19.8gr of H110 and a Hornady 110gr V-MAX. I also have the 16" ...
Read More...

4/4 found this helpful

Helpful Positive Review

worth the wait by Bart, Verified Owner, September 6, 2017

Sure, I had to wait for this product, guess because of demand-but it's worth the wait. Previously, I bought another SBR from another company but was not the same quality as the Radical Firearms product. This item is much better, you can see the qua...
Read More...

3/3 found this helpful

Read All 8 Reviews

Caliber:: .300 AAC Blackout
Barrel Length:: 10.5 in
Finish:: Matte
Color:: Black
Gun Model:: AR-15
Gun Rail:: M-LOK
Additional Features:: A2 FH, w/o BCG and CH
Magazine Included:: No
Length:: 10 in
Model:: Slim Rail System (FCR)

Code: 2CS-UFH-HP2-FU10-5-300HBAR-10FCR

MPN: FU10.5-300HBAR-10FCR

UPC: 816903025015

Product No Longer Available

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Product Info for Radical Firearms 10.5 in. 300 AAC Blackout Upper Assembly

The Radical Firearms 10.5 inch Upper Receiver is a flat top, law-enforcement grade, drop in receiver, ready to be mounted to any Mil-Spec AR-15 lower receiver! This fully mil-spec compliant receiver provides a high-quality upper for any level budget or shooter. Comes complete and assembled with Upper Receiver, Forward Assist, Ejection Port Door, Barrel Nut. 10.5 inch HBAR Profile Barrel and A2 Flash Hider. Bolt Carrier Group and Charging Handle are additional. 10.5 inch HBAR Melonite 300 Blackout Barrel. 4140V Chrome Moly. 1 in 8 inch twist rate. HPT/MPI. AAC 300 BLACK OUT. M4 Feed ramps. Low Profile Micro Gas Block. DGI Stainless Pistol-length gas tube. Direct Gas Impingement. Mil-Spec A2 Flash Hider. Integral Keymod and Picatinny Rail for Mounting Lights, Lasers, Bipods & Sights. Forged Upper Receiver with Forward Assist, Shell Deflector.

Package Contents:

Radical Firearms 10.5 in. 300 AAC Blackout Upper Assembly

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