The MK3s is a MK3, but shorter. The 13.9" barrel still has the ability to P&W to a legal 16" length while still being a very handy vesatile length. The Hanson barrel profile is factory pinned and very efficient for its weight.
Each upper ships with a unique checklist noting the ejection pattern with brass cased ammunition, function, lock back on empty, and any buffer/spring recomendations I may have.
The Basics
13.9" Ballistic Advantage Hanson 5.56 Upper, KAK 4-Prong P&W to 16", 13" KAK Mlock Rail, AO TMS BCG, Pinned Gas Block, Mil-Spec Upper and Charging handle
The Specifics
Barrel:
Manufacturer - Ballistic Advantage
Length/Chamber - 13.9" 5.56
Twist - 1:7 Twist
Material - 4150 Chrome Moly-Vanadium
Profile - Hanson
Gas System - Mid-Length
Finish - Nitride
Thread Pitch - 1/2x28
Gas Port - .080
*Gas Blocks Are Factory Pinned*
1st Rebarrel - FREE
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:
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 - 13"
Material - 6061 T6 Aluminum
Finish - Hard Coat Black Anodization
Mounting Platform - Mlock
Barrel nut torqued to 50 FT-lbs
Upper Receiver:
Manufacturer - Anderson/Aero
Material - 7075 T6 Aluminum
Machined from Forged Aluminum
Finish - Type 3 Hardcoat Anodized Black
Standard Forward Assist
Standard Dust Cover
M4 Feed Ramps
Charging Handle:
Material - 7075 T6
Machined from Forged Aluminum
Finish - Type 3 Hardcoat Anodized + Teflon Coated for Smoother Operation
Gas Block:
Material - 4140 Steel
Finish - Nitride
Style - Low Profile
Size - .750"
Attachment Method - 2x Set Screws
Pinned
Not Adjustable
Set screws are torqued to 30 IN-lbs. and have High-Temp threadlocker applied for extra security.
Gas Tube:
Length - Mid Length
Material - Stainless Steel
Muzzle Device
KAK 3-Prong (P&W to 16.1" unless otherwise requested)
Finish - Phosphate
Thread - 1/2x28
When Pinned and Welded in place this will bring the MK3s to a legal 16"+ If you do not want it pinned please write that down in the order notes!
If you have any questions or requests please leave them in the order notes!