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MK5 - 12.3" 5.56 Complete Upper Receiver - Hanson Barrel

The MK5 is our last upper for the MK series of uppers, with more improvements to the overall build. These are Do-It-All uppers build to be extremely accurate, reliable, and affordable. First rebarrel is still free and every component has a lifetime warranty.

 

Each upper ships with a unique checklist noting the ejection pattern with brass  ammunition, function, lock back on empty, and any buffer/spring recomendations I may have.

 

The Basics

 

12.3" Ballistic Advantage Hanson 5.56 Upper, 9.8" KAK 7-Sided Mlock RAill, AO Precision TMS BCG, Mil-Spec Upper and Charging handle

 

The Specifics

 

Barrel:

Manufacturer - Ballistic Advantage

Length/Chamber - 12.3" 5.56

Twist - 1:7 Twist

Material - 4150 Chrome Moly-Vanadium

Profile - Hanson

Gas System - Carbine

Finish - Nitride

Thread Pitch - 1/2x28

Gas Port - .072

*Pinned Gas Blocks*

 

1st Rebarrel - FREE

 

All NFA/ATF Rules Apply

 

Barrel nut is sequentialy torqued down to 50 FT-lbs. Starting at 25, then 35, and then finally 50 FT-lbs to ensure proper mating of the threads. 

 

If you legit burn out a barrel, like 10,000 -25,000 rounds, and the barrel becomes inaccurate I will rebarrel it for you for free. Good luck.

 

 

Bolt Carrier Group:

MFG: AO Precision

Bolt Material - C158 Alloy

Carrier Material - 8620 Alloy

Gas Key Material - 4130 Alloy

Profile - Full Auto

Finish - Phosphate/Chrome

Gas Key Screws - Grade 8 (torqued and staked to Mil-Spec)

Forward Assist Cuts

Mil-Spec Firing Pin (Hard Chrome Coated)

 

Handguard:

Manufacturer - KAK

Length - 9.8"

Material - 6061 T6 Aluminum

Finish - Hard Coat Black Anodization

Mounting Platform - Mlock

Wedge Lock Attachment

 

Barrel nut torqued to 50 FT-lbs

Wedge Lock Tightened down to 60 IN-lbs with Blue Loctite

MK5 - 12.3" 5.56 Complete Upper Receiver - Hanson Barrel

SKU: MK5
$450.00Price
Out of Stock
  • Our stated policy is to not accept returns, but if you accidently ordered the wrong item or there was a mistake or if you have any issue at all send us an email (listed in the "contact us" section) and we will work it out.

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