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Rifle Build Kit - 5.56 | 16" Complete Upper Receiver | M4 6-Positon Stock Kit | BN LPK

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Product Code: RBK-RTB16C55612RA2-TS-M4-6POS-IBOR
MSRP: $639.85
Sale Price: Sale Price: $399.95
$399.95
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Rifle Build Kit - 5.56 | 16" Complete Upper Receiver with A2 | M4 6 Position Stock and Buffer Tube Kit | Bare Necessities Lower Parts Kit



Complete 16" 5.56 Carbine Upper Receiver | 15" M-LOK | BCG & CH:

This Complete 16 inch M-LOK upper receiver comes with the Always Armed 15 inch free float Octo Series 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 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


Handguard:

  • 15" Lightweight - Free Float M-LOK

 

Charging Handle:

  • Alloy Charging Handle Assembly
  • Complete with Standard Latch
  • Made from hardcoat anodized aluminum
  • Black finish


Tactical Sport 6-Position M4 Stock Kit:

This polymer stock is made from impact-resistant, high-strength material.

  • Mil-spec Diameter Extension Tube Made from Aircraft Aluminum with Rolled Threads
  • Built for Heavy-duty Operations with Tightest Tolerance Control
  • Stock Assembly Complete with Action Spring, Buffer Assembly, Tear-drop Ring, and Castle Nut

 

Bare Necessities AR15 Complete Lower Parts Kit:

With everything you need for a complete lower, including every spring, pin, the BN 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. Also, it may have a standard curved trigger or a flat trigger.*


Please Note: Uppers may present light fouling from our quality control process and/or test firing

SKU:
RBK-RTB16C55612RA2-TS-M4-6POS-IBOR