Description
This full build kit is chambered in 9mm and built around a 4.5-inch 4150 CrMoV barrel with a medium profile, nitride finish, 1-10 twist rate, and 1-2x36 threaded muzzle. The stripped AR-15 upper receiver is machined from 7075 T6 aluminum with an anodized finish and M4 feed ramps. The 9mm nitride BCG is constructed from 8620 alloy steel with a nitride finish, paired with an AR-15 M4 mil-spec charging handle. The 4-inch Honeycomb M-Lok freefloat handguard is constructed from 6061-T6 aluminum in grey. A 9mm A2 birdcage flash hider with a manganese phosphate finish and 1-2x36 thread pitch is included. The SB Tactical SBA5 Pistol Stabilizing Brace in black nylon reinforced polymer pairs with the buffer system included in this kit. A lower parts kit is included. Lower receiver is not included.
Key Features
4.5-inch 4150 CrMoV barrel, nitride finish, medium profile, 1-10 twist, 9mm, 1-2x36 thread pitch
Blowback operated
Stripped AR-15 upper receiver, 7075 T6 aluminum, anodized finish, M4 feed ramps
9mm nitride BCG, 8620 alloy steel, nitride finish
AR-15 M4 mil-spec charging handle
4-inch Honeycomb M-Lok freefloat handguard, 6061-T6 aluminum, grey
9mm A2 birdcage flash hider, manganese phosphate finish, 1-2x36 thread pitch
SB Tactical SBA5 Pistol Stabilizing Brace, nylon reinforced polymer, black
Lower parts kit included
Lower receiver not included
Perfect For
Builders completing an AR-9 pistol lower in 9mm with a 4.5-inch compact configuration
Builds requiring an SB Tactical SBA5 Pistol Stabilizing Brace with a grey anodized Honeycomb M-Lok handguard
AR-9 pistol projects needing a 9mm nitride BCG in 8620 alloy steel
Builders sourcing a Lightshow II Grey series full build kit with a stripped upper receiver featuring M4 feed ramps
SB Tactical SBA5 Pistol Stabilizing Brace and Buffer System
The SB Tactical SBA5 Pistol Stabilizing Brace in black nylon reinforced polymer pairs with the buffer system components included in this kit. These components are included as a matched set within this full build kit. The lower parts kit required to complete a stripped lower receiver is included, and the lower receiver itself is not included.
9mm Nitride BCG and Upper Receiver
The 9mm nitride BCG is constructed from 8620 alloy steel with a nitride finish and is a dedicated 9mm bolt carrier group matched to the AR-9 platform. The stripped AR-15 upper receiver is machined from 7075 T6 aluminum with an anodized finish and M4 feed ramps. The AR-15 M4 mil-spec charging handle included in this kit is a standard configuration handle paired to the upper receiver.
4.5-Inch 9mm Barrel and Honeycomb M-Lok Handguard
The 4.5-inch barrel is machined from 4150 CrMoV steel to a medium profile with a nitride finish and a 1-10 twist rate chambered in 9mm. The 1-2x36 threaded muzzle is the standard thread pitch for 9mm AR-pattern builds, and the 9mm A2 birdcage flash hider with manganese phosphate finish included in this kit is matched to that specification. The 4-inch Honeycomb M-Lok freefloat handguard is constructed from 6061-T6 aluminum in grey with M-Lok attachment points for compatible accessories.
Included Components
This full build kit includes the upper assembly, 9mm nitride BCG, AR-15 M4 mil-spec charging handle, lower parts kit, buffer system components, SB Tactical SBA5 Pistol Stabilizing Brace, and 9mm A2 birdcage flash hider. Lower receiver is not included.
Part Number: PI-PK-9MM-64325-SBA5
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