Can't decide whether to get a long or short upper? You don't have to! Now you can get both at an extra savings. All our uppers are carefully assembled and tested and ready to go out of the box. Every component is chosen to ensure a high quality upper is produced. Every upper is custom built to order and we go the extra mile to ensure the finished product is to your specifications. Both 5.56 NATO uppers start with AR-15 MILSPEC 7075 T6 Forged Aluminum receivers, mated to Tactical Kinetics, Med Profile, QPQ Nitride/Melonite treated barrels. Tactical Kinetics is one of our major partners in the industry and they produce high quality, accurate barrels. The Rails are a free floated system, M-LOK slots on all three sides, full length picatinny rail at the top, lightweight handguards. Barrel Nuts are made out of solid steel to ensure a solid mounting system. Bolt Carrier Group and Charging Handle is OPTIONAL. We offer TWO choices of BCG. 1) a NITRIDE BCG, M16 Profile, Properly Staked Gas Key, MP Tested, 8620 Carrier, 9310 Bolt. OR 2) a NICKEL BORON BCG, M16 Profile, Properly Staked Gas Key, MP Tested, 8620 Carrier, 9310 Bolt. Standard Charging Handle included in options. We also offer a CHOICE of Muzzle Devices - upgrade the flash hider to a Black or Stainless Competition Muzzle Brake. This is an enhanced version of the popular style muzzle brakes. The baffles and ports are milled larger to drive pressure up and to keep the muzzle down more effectively. We can also UPGRADE the GAS BLOCK to an Adjustable Gas Block. Great option if you are using a suppressor or just want to fine tune your system. Also an OPTION is COLOR. We can change the receiver and handguard to MAGPUL FDE (FLAT DARK EARTH) COLOR (see pictures). SPECIFICATIONS of 22 inch 5.56 NATO UPPER UPPER RECEIVER: AR-15 Mil-Spec Machined out of 7075-T6 Forged Aluminum, M4 Feed Ramps, Type III Hardcoat Anodized Black with Forward Assist and Ejection Port Cover Installed BARREL: 22 inch, 5.56 NATO Caliber, 4150 Chrome Moly Vanadium Steel, 1:7 Twist, Medium Profile, Nitride/Melonite Treated - made by Tactical Kinetics HANDGUARD: 15 inch M-LOK Free Floated, Machined out of 6061 T6 Aluminum - made by Axis MFG GAS SYSTEM: Rifle Length, Direct Impingement, Stainless Steel Tube GAS BLOCK: Low Profile Gas Block, Machined out of 4140 Steel MUZZLE DEVICE: Standard A2 Flash Hider with Crush Washer 100% MADE IN THE USA SPECIFICATIONS of 10.5 inch 5.56 NATO UPPER UPPER RECEIVER: AR-15 Mil-Spec Machined out of 7075-T6 Forged Aluminum, M4 Feed Ramps, Type III Hardcoat Anodized Black with Forward Assist and Ejection Port Cover Installed BARREL: 12.5 inch, 5.56 NATO Caliber, 4150 Chrome Moly Vanadium Steel, 1:7 Twist, Medium Profile, Nitride/Melonite Treated - made by Tactical Kinetics HANDGUARD: 10 inch M-LOK Free Floated, Machined out of 6061 T6 Aluminum - made by Ghost Firearms GAS SYSTEM: Carbine Length, Direct Impingement, Stainless Steel Tube GAS BLOCK: Low Profile Gas Block, Machined out of 4140 Steel MUZZLE DEVICE: Standard A2 Flash Hider with Crush Washer 100% MADE IN THE USA OPTIONAL UPGRADES OPTIONAL: UPGRADE Muzzle Device to a Black or Stainless Competition Muzzle Brake OPTIONAL: ADD a Nitride OR Nickel Boron M16 Profile BCG; and Standard Charging Handle OPTIONAL: UPGRADE GAS BLOCK to an Adjustable Gas Block OPTIONAL: COLOR Change to a Magpul FDE Colored Receiver and Magpul FDE Colored M-LOK Handguard (10 inch and/or 15 inch Handguard)