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New!  RF 10.5" M4 5.56MM Radical Rail Upper Assembly
RF 10.5" M4 5.56MM Radical Rail Upper Assembly


 
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MSRP: $289.95

Stock Status:Ready to build; check lead times
Availability: Usually Ships in 1 to 2 Weeks
Product Code: FU10.5-5.56M4-9FHR


BCG*:


Charging Handle*:


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Description
 
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The Radical Firearms M4 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" M4 Profile Barrel and A2 Flash Hider. Bolt Carrier Group and Charging Handle are additional and are offered at discounted prices in the drop down menus.

Barrel Length: 10.5"
Barrel Material:
4140 Chromoly Barrel
Barrel Finish: Melonite Coating
Barrel Profile: HBAR
Barrel Thread Pitch: 1/2x28
Chamber: 5.56
Twist Rate: 1:7
Barrel Extension: M4 Feed Ramps
Gas System: Carbine Length
Gas Block Type: .750 Low Profile Gas Block
Muzzle Device: A2 Flash Hider
Upper Receiver Material: Forged 7075 T6
Upper Receiver Style: M4 Mil-STD
Upper Receiver Finish: Type III Anodizing
Forward Assist: Billet Dimpled
Dust Cover: MIL-STD
Handguard Type: Free Float
Handguard Style: Keymod Hybrid Rail
Handguard Length: 9"

Made in Houston, Texas U.S.A.!


Average Rating: 4.5 of 5 Total Reviews: 5 Write a review »

  0 of 0 people found the following review helpful:
 
RF 10.5" M4 5.56MM Radical Rail Upper Assembly May 3, 2017
Reviewer: joseph from Niceville , FL United States  
great product very happy with my upper. I was worried when I saw the 8 week production time (after I placed my order of course). But to my surprise i got it in a week yeah ordered oct 5th it was in my hands on the 12th  already put a hundred rounds through it with no problems thanks again

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  0 of 0 people found the following review helpful:
 
Very impressed! July 23, 2016
Reviewer: ronald weber from Harrisburg, PA United States  
I bought this upper for my wife who is also an LEO. I bought a piston AR pistol the next day and when her upper came in the mail I wished I bought an upper for me too. The hybrid rail is fantastic and the quality is spot on. I will be ordering myself one here very soon. Thanks

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  1 of 1 people found the following review helpful:
 
Super Happy July 1, 2016
Reviewer: James from Glendale, CO  
I'd rate this 6 stars if I could! Way higher quality than what I expected. Lightening fast shipping too! My jaw dropped when it came in the mail today. Wasn't expecting it for a couple more weeks. Radical Firearms FTW!!!

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  0 of 0 people found the following review helpful:
 
Awesome quality and rail June 5, 2016
Reviewer: Anonymous Person from CA United States  
Looks to be a real nice upper. It took over 3 months to get but I knew this going into it.

Customer service was good and all emails were answered in a reasonable time.

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  0 of 0 people found the following review helpful:
 
Bad Experiance May 15, 2016
Reviewer: Robert from Fort Worth , TX United States  
Overall terrible experience. I ordered this upper receiver with the BCG, Charging Handle and Spitfire Muzzle device when I finally received the item in the mail they had only shipped the upper with no BCG Charging Handle or Muzzle device. After sending in some photos and dealing with customer service they finally sent the correct items.  Disappointing to say
the least.

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