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Description
BG Complete 4.5" 9mm Upper Receiver - Black | A2 | 4" M-LOK | With BCG & CH:
This Complete 4.5 inch M-LOK upper receiver comes with a 4 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 9mm
Length 4.5
Material 4150 Chrome Moly Vanadium
Profile Straight
Finish QPQ Corrosion Resistant
Gas System Length None
Gas Block Journal N/A
Dimpled? No
Twist Rate 1:10
Muzzle Thread 1/2x36 TPI
Weight 8.3oz
Barrel Extension Integrated
Target Crown 11 Degree
Bolt Carrier Group:
Colt & Glock Compatible
USA made 8620 Steel Carrier Construction
Phosphated or Nitrided Finish
Heavy Firing Pin Retaining Spring
13.7 oz.
Upper Receiver:
This .22LR / 9mm upper receiver assembly is made from forged 7075-T6 aluminum and is Hard Coat Anodized. It meets military specifications and comes in a true slick side configuration. The ejection port door is sized for 9mm and 22LR. This upper does not have a shell deflector, nor does it have a forward assist.
Machined from a Mil-Spec 7075 T6 forging
Type III Hardcoat Anodized finish
Handguard:
4" free float handguard
MIL-STD 1913 Picatinny rail on top
1 M-Lok slots on 3 sides
Precision Machined aircraft grade aluminum, for high strength and weight savings
Steel Barrel nut to resist movement under heat
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
*May come with standard “tear-drop” endplate OR ambidextrous sling loop endplate based on component availability.
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
SKU:
BG459MM4INA2-BLK-IBOR-FULL-LPK-TS-SBA3
BG459MM4INA2-BLK-IBOR-FULL-LPK-TS-SBA4
BG459MM4INA2-BLK-IBOR-FULL-LPK-TS-SBA5
