RF85 7.5” 300 Blackout EXT Complete Upper

5.00 out of 5 based on 1 customer rating
(1 customer review)

$566.57

RF85 Treated Anderson 7.5” 300 Blackout Complete Upper With EXT Forearm,  7.5” 300 Blackout Contour Barrel. 1-7 twist. Phosphate Finish, Pistol Gas Set Up, 5/8-24 threads, Forged Upper Receiver, Anderson EXT Hand Guard Pistol Length, Knight Stalker Flash Hider, M16 Carrier is Chrome Lined, made from 8620 steel, Bolt is made from 9310 steel and coated per mil spec. MPI Tested. The 223 Bolt and Bolt Carrier Assembly comes complete with Cam Pin, Firing Pin and Firing Pin Retainer and Standard Charging Handle.

In stock

UPC: 640901516714 SKU: B2-K614-CB00-R Categories: ,

Description

RF85 Treated Anderson 7.5” 300 Blackout Complete Upper With EXT Forearm,  7.5” 300 Blackout Contour Barrel. 1-7 twist. Phosphate Finish, Pistol Gas Set Up, 5/8-24 threads, Forged Upper Receiver, Anderson EXT Hand Guard Pistol Length, Knight Stalker Flash Hider, M16 Carrier is Chrome Lined, made from 8620 steel, Bolt is made from 9310 steel and coated per mil spec. MPI Tested. The 223 Bolt and Bolt Carrier Assembly comes complete with Cam Pin, Firing Pin and Firing Pin Retainer and Standard Charging Handle.

Additional information

Weight 5 lbs
Dimensions 28 x 3 x 3 in

1 review for RF85 7.5” 300 Blackout EXT Complete Upper

  1. 5 out of 5

    First of all, this complete upper is awesome!! I am able to easily keep rounds inside a pie plate at 50 yards with iron sights. I have to admit though, I had some issues, and I’ve been told pistol length gas systems can be finicky. The entire upper came completely lubed inside and out in a thick packing grease, so it took me quite some time to get it clean. I found out after shooting it for the first time that I wasn’t able to completely get it all out of the bolt, particularly out of the ejector spring area. I tore it completely down this time and cleaned it again, but had to get a replacement ejector roll pin since the spring pin that came with it got damaged from removal. I was also having lots of issues with failure to eject, the rim on each shell casing had a good sized dent from the extractor. They would extract from the chamber but not eject and would lay on top of the magazine. I bought an H3 buffer to slow the action down, as well as a Wolff extra power extractor spring. Installing the H3 buffer alone didn’t help, then I installed the new extractor spring. I then made an H2 buffer from the H3 and the standard one because it short cycled once. After all that and about 150 rounds down range with no more issues, it looks like it’s hardly been shot at all, love it!

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