Description
This build kit DOES NOT come assembled.
This Complete 16 inch M-LOK upper receiver build kit comes with our RTB 15 inch free float handguard and includes only the best Mil-Spec components for your AR15 build. The core components of this kit are a barrel that’s machined from chrome moly vanadium 4150 steel, the RTB lightweight handguard that’s machined from 6061-T6 aluminum, an M4 upper that is machined from 7075 T6 forgings, and our black nitride bolt carrier group that is finished with an incredible polish, making the action smooth and easy to keep clean.
As a “do it yourselfers" or DIY enthusiast, you may prefer an AR-15 build kit over a complete upper. Building an AR-15 from a kit allows for a greater level of customization and personalization of the final product. DIYers can choose from a variety of components, such as barrels, handguards, and triggers, to create a rifle that meets their specific needs and preferences. Additionally, building an AR-15 from a kit can be a rewarding and educational experience, as it allows you to gain a deeper understanding of how their firearm functions and how to properly maintain it. Building an AR-15 from a kit may often be more cost-effective than purchasing a complete upper, as it allows DIYers to select only the components they need, rather than paying for pre-assembled parts they may not want or need.
We also carry this Upper Receiver Kit assembled here.
Barrel:
16" 5.56 4150 CMV Barrel - Black Nitride
M4 Carbine Profile - .750" GB Journal
1:7 Twist Rate - 1/2x28 Muzzle Thread
Bolt Carrier Group:
Enhanced 9310 Steel (Bolt)
8620 Tool Steel (Carrier)
Bolt is shot Peened and MPI
All BCG components are pre-polished before being processed and then post polished for an incredible shine
Upper Receiver:
Machined from a Mil-Spec 7075 T6 forging
M4 Feed ramps
Cerakoted in Flat Dark Earth
Made in the U.S.A.
Handguard:
MATERIAL: HARD COAT CERAKOTED ALUMINUM HANDGUARD, ALUMINUM BARREL NUT
PRECISION BORE
ACCEPTS M-LOK RAIL SECTIONS & ACCESSORIES
7075-T6 BARREL NUT
RAIL LENGTH IS MEASURED ALONG THE TOP
INNER DIAMETER: 1.36"
Charging Handle:
Tried and True Standard Charging Handle
Forged 7075 Aluminum construction
Mil-Spec Type-III Hardcoat Anodized finish
Caliber - .223 / 5.56 / 300 Blackout
Made in the USA
SKU: UBK-RTB1655615-FDE
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