10.3 556 M4QR .070 Crane Spec
556 NATO 10.3" M4QR .070 Crane Spec

$425.00 $349.00
(You save $76.00)
(2 reviews) Write a Review
 
 
10.3 MK18 (Crane Spec)
 
Our 10.3" Crane Spec complete upper receiver features the ideal gas port sizing (.070) to achieve minimal gas blowback when ran suppressed. This unit is specifically designed to be ran in conjunction with a silencer. 
 
We do not guarantee reliable cycling with some manufactures ammunition without the addition of a silencer. 
 

 

- 10.3" 4150 CMV Melonite

- 1/7 Twist

- .070 Gas Port

- M4 Feed Ramps

- Carbine Length Gas System with F-Mark Front Site Base

- Front Site & Sling Swivel

- 7" 2 piece Quadrail

-A2 Flash Hider

- M16 Phosphate BCG HP/MPI

- Delta Ring Assembly

- QPQ Corrosion Resistant Finish

- 1/2-28 Thread

- Dry Film Lubed Upper w/ T-Markings

- Forward Assist & Ejection Port Assembly

 

*When choosing a Cerakote Package, please allow for an additional two weeks for delivery. The Cerakote Package includes the Cerakote of the upper receiver as well as the forearm. If any other parts are needed to be Cerakoted, please email info@androcorpind.com

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10.3 MK18 (Crane Spec)
 
Our 10.3" Crane Spec complete upper receiver features the ideal gas port sizing (.070) to achieve minimal gas blowback when ran suppressed. This unit is specifically designed to be ran in conjunction with a silencer. 
 
We do not guarantee reliable cycling with some manufactures ammunition without the addition of a silencer. 
 

 

- 10.3" 4150 CMV Melonite

- 1/7 Twist

- .070 Gas Port

- M4 Feed Ramps

- Carbine Length Gas System with F-Mark Front Site Base

- Front Site & Sling Swivel

- 7" 2 piece Quadrail

-A2 Flash Hider

- M16 Phosphate BCG HP/MPI

- Delta Ring Assembly

- QPQ Corrosion Resistant Finish

- 1/2-28 Thread

- Dry Film Lubed Upper w/ T-Markings

- Forward Assist & Ejection Port Assembly

 

*When choosing a Cerakote Package, please allow for an additional two weeks for delivery. The Cerakote Package includes the Cerakote of the upper receiver as well as the forearm. If any other parts are needed to be Cerakoted, please email info@androcorpind.com

2 Reviews 556 NATO 10.3" M4QR .070 Crane Spec

5 out of 5 (2 reviews) | Top Reviews | Hide Reviews Show Reviews
All Reviews
  • 5
    Outstanding with suppressor

    Posted by Massivelyawesome on Mar 13th 2018

    Have yet to try it without, but using sico specwar and an H3, the gas is minimal, dwell time is outstanding. Runs cleaner than any other RGB setup I've tried.

  • 5
    High Quality

    Posted by Mitchell lien on Feb 28th 2018

    Very Nice complete upper will be buying from Andro Corp Industries again!!! Quality workmanship, great communication, and fast shipping!!!