Builder's Grade Complete 16" 5.56 Carbine Upper Receiver | 12" Always Armed Octo Series M-LOK | BCG & CH
This Complete 16 inch M-LOK upper receiver comes with the Always Armed 12 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 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:
- Free Float 12" M-Lok Hand Guard
 - MIL-STD 1913 Picatinny Rail
 - M-Lok Slots on 4 Sides
 - 6000 Series Aluminum Extrusion
 - Clamp on System for Easy Assembly
 - Steel Barrel Nut & Mounting Screws Included
 - Hard Coat Black Anodized Finish
 - Made in the USA
 - Lightweight Design
 - Weight: 13.5oz
 
Charging Handle:
- Alloy Charging Handle Assembly
 - Complete with Standard Latch
 - Made from hardcoat anodized aluminum
 - Black finish
 
Please Note: Uppers may present light fouling from our quality control process and/or test firing
***Please allow an additional 2-3 business days of lead time as these uppers are made to order.***


                                
                    
                    
                    
