Pistol Build Kit - 300 BLK | Builder's Grade Complete 10.5" Upper Receiver with A2 | SB Tactical Pistol Brace | Bare Necessities Lower Parts Kit
BG Complete 10.5" 300 BLK Upper Receiver - Black | A2 | 9" M-LOK | With BCG & CH:
This Complete 10.5 inch M-LOK upper receiver comes with a 9 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.
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Barrel
|
Specifications
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|---|---|
| Caliber | 300BLK |
| Length | 10.5" |
| Material | 4150 Chrome Moly Vanadium |
| Profile | Medium |
| Finish | QPQ Corrosion Resistant |
| Gas System Length | Pistol |
| Gas Block Journal | .750" |
| Dimpled? | No |
| Twist Rate | 1:7 |
| Muzzle Thread | 5/8x24 TPI |
| Weight | 20.8oz |
| 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:
- 9" free float handguard
- MIL-STD 1913 Picatinny rail on top
- 3 M-Lok slots on 3 sides
- Precision Machined aircraft grade aluminum, for high strength and weight savings
- Hard Coat Anodized per Mil-A-8625F, Type III, Class 2
- Clamp on system for easy assembly
- Steel Barrel nut to resist movement under heat
- 10 oz with barrel nut and hardware
- 1.35" Inside Diameter
- 1.63" Wide
- Made in USA
Charging Handle:
- Alloy Charging Handle Assembly
- Complete with Standard Latch
- Made from hardcoat anodized aluminum
- Black finish
SB Tactical Pistol Brace - SBA3, SBA4, or SBA5 Pistol Brace + Tactical Sport Mil-Spec Buffer Tube Kit:
- SB Tactical Adjustable Pistol Stabilizing Brace
- Complete Tactical Sport Buffer Tube Assembly Kit
- Carbine buffer (3 oz)
- Carbine buffer spring
- Carbine stock end plate
- Carbine stock lock ring-castle nut
Bare Necessities Complete AR15 LPK:
This BN Lower Parts Kit is what you need to build a custom AR15 from the ground up. Mil-spec dimensions and coating ensure the highest quality and correct component interface.
- Takedown/pivot Spring
- Takedown/pivot detent
- Trigger/hammer pin
- Takedown pin
- Pivot pin
- Bolt Catch
- Bolt Catch Spring
- Bolt Catch buffer
- Bolt catch roll pin
- Safety Selector
- Safety Selector spring
- Safety Selector detent
- Buffer retainer
- Buffer retainer spring
- Trigger guard
- Trigger guard roll pin
- A2 pistol grip
- Pistol grip screw
- Pistol grip lock washer
- Trigger spring
- Hammer spring
- Disconnector spring
- Magazine catch body
- Magazine catch spring
- Magazine catch button
- Hammer
- Trigger
- Disconnector
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.***
