Rifle Build Kit - 5.56 | RTB Complete 16" Upper Receiver with A2 | Mission First 6-Position Minimalist Stock and Buffer Tube Kit | Bare Necessities Lower Parts Kit
RTB Complete 16" 5.56 Carbine Upper Receiver | 15" M-LOK | BCG & CH:
This Complete 16 inch M-LOK upper receiver comes with our RTB 15 inch free float handguard and is built with only the best Mil-Spec components. The heart of this upper is comprised of a 4150 barrel and our black nitride bolt carrier group that is finished with an incredible polish, making the action smooth and easy to keep
clean.
|
Barrel
|
Specifications
|
|---|---|
| Caliber | 5.56 |
| Length | 16" |
| Material | 4150 Chrome Moly Vanadium |
| Profile | M4 |
| Finish | QPQ Corrosion Resistant |
| Gas System Length | Carbine |
| Gas Block Journal | .750" |
| Dimpled? | No |
| Twist Rate | 1:7 |
| Muzzle Thread | 1/2x28 TPI |
| Weight | 27.2oz |
| Barrel Extension | M4 Feed Ramps |
| Target Crown | 11 Degree |
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 Hard Coat Anodized per Mil-A-8625F, Type III
- M4 Feed ramps
- Made in the U.S.A.
Handguard:
- MATERIAL: HARD COAT ANODIZED 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
Mission First BMSMIL Battlelink Minimalist Stock:
Designed to be the lighted stock on the market, the BMSMIL Battlelink from Mission First went through extensive input from operators to find the best balance of functionality and lightweight materials. Manufactured using a special, military grade, reinforced polyamide, the BMSMIL Battlelink adapts to operational needs by utilizing custom accessory mounts and new sling configurations but weighs under 6 ounces. The stock is designed for mil-spec 1.148 diameter extensions and is proudly made in the United States. If you have questions or concerns, be sure to contact us!
- Slide-on replacement for original collapsible butt stock
- Angled non-slip rubberized buttpad for faster presentation
- Quick detach sling mounting point positioned perfectly for ambi shooters
- Upper section includes enhanced cheek weld
Bare Necessities AR15 Complete Lower Parts Kit:
With everything you need for a complete lower, including every spring, pin, the Bare Necessities LPK makes your rifle truly complete by including the all-important Safety, Mag Catch, Hammer and Trigger, Take Down, and A2 Standard Grip.
Components:
- Disconnector Spring
- Hammer Pin & Trigger Pin
- Selector
- Selector Spring
- Selector Detent
- Magazine Catch
- Magazine Catch Spring
- Aluminum Magazine Catch Button
- Bolt Catch
- Bolt Catch Detent
- Bolt Catch Spring
- Bolt Catch Roll Pin
- Take Down Pin Take Down Detent
- Take Down Detent Spring
- Front Pivot Pin
- Front Pivot Pin Detent
- Front Pivot Pin Detent Spring
- Aluminum Trigger Guard
- Trigger Guard Roll Pin
- Buffer Retainer Detent
- Buffer Retainer Spring
- A2 Pistol Grip
- Pistol Grip Screw
- Pistol Grip Lock Washer
- Trigger
- Trigger Spring
- Hammer
- Hammer Spring
- Disconnector
*May come with standard “tear-drop” endplate OR ambidextrous sling loop endplate based on component availability.
*This product is manufactured based on parts on hand. It may feature a standard or oversized trigger guard, depending on what we have available at the time.*
