1-14 of 14 results
1-14 of 14 results
KAK Industry
Kak Barreled Ar-15 Upper Receiver - 5.56 Nato - 11.5"
Platform: AR-15
Gas System Length: Carbine
Caliber: 5.56 NATO
Platform
AR-15
Gas System Length
Carbine
Caliber
5.56 NATO
$280$280
Out of Stock$280$280
Out of Stock
KAK Industry
KAK Complete AR-15 Upper Receiver - 5.56 NATO - 11.5"
Platform: AR-15
Caliber: 5.56 NATO
Platform
AR-15
Caliber
5.56 NATO
$382$382
Out of Stock$382$382
Out of Stock
KAK Industry
KAK Complete AR-15 Upper Receiver - 5.56 NATO - 16"
Platform: AR-15
Caliber: 5.56 NATO
Platform
AR-15
Caliber
5.56 NATO
$414$414
Out of Stock$414$414
Out of Stock
KAK Industry
KAK Barreled AR-15 Upper Receiver - 5.56 NATO - 16"
Platform: AR-15
Caliber: 5.56 NATO
Platform
AR-15
Caliber
5.56 NATO
$292$292
Out of Stock$292$292
Out of Stock
KAK Industry
KAK Barreled AR-15 Upper Receiver with 9" M-LOK Handguard - 5.56 NATO - 8"
Platform: AR-15
Caliber: 5.56 NATO
Platform
AR-15
Caliber
5.56 NATO
$280$280
Out of Stock$280$280
Out of Stock
KAK Industry
5.56x45 Nato Complete Upper Receiver - Kak Forged Complete Upper, 16" 5.56 Nato Mid Gas 13" Mlok
Platform: AR-15
Gas System Length: Mid-Length
Caliber: 5.56 NATO
Receiver Type: Forged
Platform
AR-15
Gas System Length
Mid-Length
Caliber
5.56 NATO
Receiver Type
Forged
$400$400
Out of Stock$400$400
Out of Stock
KAK Industry
KAK Industry K-Spec 13.90" Railed Upper 5.56x45mm 1:7 Mid-Length w/BCG&CH, Black
Platform: AR-15
Gas System Length: Mid-Length
Platform
AR-15
Gas System Length
Mid-Length
$600$600
Out of Stock$600$600
Out of Stock
KAK Industry
KAK Complete AR-15 Upper Receiver with 9" M-LOK Handguard - 5.56 NATO - 8"
Platform: AR-15
Caliber: 5.56 NATO
Platform
AR-15
Caliber
5.56 NATO
$405$405
Out of Stock$405$405
Out of Stock
KAK Industry
K-SPEC 5.56X45MM NATO COMPLETE UPPER RECEIVER
Platform: AR-15
Caliber: 5.56 NATO
Platform
AR-15
Caliber
5.56 NATO
Price N/APrice N/A
Out of StockPrice N/APrice N/A
Out of Stock
KAK Industry
KAK Industry K-Spec 14.50" Railed Upper 5.56x45mm 1:7 Mid-Length w/BCG&CH, Black
Platform: AR-15
Gas System Length: Mid-Length
Caliber: 5.56 NATO
Platform
AR-15
Gas System Length
Mid-Length
Caliber
5.56 NATO
$600$600
Out of Stock$600$600
Out of Stock
KAK Industry
K-Spec 5.56x45mm Nato Complete Upper Receiver - K-Spec 5.56 Nato 16'''' Bbl 1-7 Twist Complete Upper Black
Platform: AR-15
Caliber: 5.56 NATO
Platform
AR-15
Caliber
5.56 NATO
$600$600
Out of Stock$600$600
Out of Stock
KAK Industry
Kak Industries Modified Ar-15 Upper Receiver Assembly - .458 Socom
Platform: AR-15
Caliber: .458 SOCOM
Platform
AR-15
Caliber
.458 SOCOM
Price N/APrice N/A
Out of StockPrice N/APrice N/A
Out of Stock
KAK Industry
KAK Industries 16" 300 Blackout Complete Upper Receiver - 13" KAK M-LOK Handguard
Platform: AR-15
Caliber: 300 Blackout
Platform
AR-15
Caliber
300 Blackout
$414$414
Out of Stock$414$414
Out of Stock
KAK Industry
K-SPEC 5.56X45MM NATO COMPLETE UPPER RECEIVER
Platform: AR-15
Caliber: 5.56 NATO
Platform
AR-15
Caliber
5.56 NATO
Price N/APrice N/A
Out of StockPrice N/APrice N/A
Out of StockKAK Industry
Kak Barreled Ar-15 Upper Receiver - 5.56 Nato - 11.5"
Platform: AR-15
Gas System Length: Carbine
Caliber: 5.56 NATO
Platform
AR-15
Gas System Length
Carbine
Caliber
5.56 NATO
Out of Stock
$280$280
$280$280
KAK Industry
KAK Complete AR-15 Upper Receiver - 5.56 NATO - 11.5"
Platform: AR-15
Caliber: 5.56 NATO
Platform
AR-15
Caliber
5.56 NATO
Out of Stock
$382$382
$382$382
KAK Industry
KAK Complete AR-15 Upper Receiver - 5.56 NATO - 16"
Platform: AR-15
Caliber: 5.56 NATO
Platform
AR-15
Caliber
5.56 NATO
Out of Stock
$414$414
$414$414
KAK Industry
KAK Barreled AR-15 Upper Receiver - 5.56 NATO - 16"
Platform: AR-15
Caliber: 5.56 NATO
Platform
AR-15
Caliber
5.56 NATO
Out of Stock
$292$292
$292$292
KAK Industry
KAK Barreled AR-15 Upper Receiver with 9" M-LOK Handguard - 5.56 NATO - 8"
Platform: AR-15
Caliber: 5.56 NATO
Platform
AR-15
Caliber
5.56 NATO
Out of Stock
$280$280
$280$280
KAK Industry
5.56x45 Nato Complete Upper Receiver - Kak Forged Complete Upper, 16" 5.56 Nato Mid Gas 13" Mlok
Platform: AR-15
Gas System Length: Mid-Length
Caliber: 5.56 NATO
Receiver Type: Forged
Platform
AR-15
Gas System Length
Mid-Length
Caliber
5.56 NATO
Receiver Type
Forged
Out of Stock
$400$400
$400$400
KAK Industry
KAK Industry K-Spec 13.90" Railed Upper 5.56x45mm 1:7 Mid-Length w/BCG&CH, Black
Platform: AR-15
Gas System Length: Mid-Length
Platform
AR-15
Gas System Length
Mid-Length
Out of Stock
$600$600
$600$600
KAK Industry
KAK Complete AR-15 Upper Receiver with 9" M-LOK Handguard - 5.56 NATO - 8"
Platform: AR-15
Caliber: 5.56 NATO
Platform
AR-15
Caliber
5.56 NATO
Out of Stock
$405$405
$405$405
KAK Industry
K-SPEC 5.56X45MM NATO COMPLETE UPPER RECEIVER
Platform: AR-15
Caliber: 5.56 NATO
Platform
AR-15
Caliber
5.56 NATO
Out of Stock
Price N/APrice N/A
Price N/APrice N/A
KAK Industry
KAK Industry K-Spec 14.50" Railed Upper 5.56x45mm 1:7 Mid-Length w/BCG&CH, Black
Platform: AR-15
Gas System Length: Mid-Length
Caliber: 5.56 NATO
Platform
AR-15
Gas System Length
Mid-Length
Caliber
5.56 NATO
Out of Stock
$600$600
$600$600
KAK Industry
K-Spec 5.56x45mm Nato Complete Upper Receiver - K-Spec 5.56 Nato 16'''' Bbl 1-7 Twist Complete Upper Black
Platform: AR-15
Caliber: 5.56 NATO
Platform
AR-15
Caliber
5.56 NATO
Out of Stock
$600$600
$600$600
KAK Industry
Kak Industries Modified Ar-15 Upper Receiver Assembly - .458 Socom
Platform: AR-15
Caliber: .458 SOCOM
Platform
AR-15
Caliber
.458 SOCOM
Out of Stock
Price N/APrice N/A
Price N/APrice N/A
KAK Industry
KAK Industries 16" 300 Blackout Complete Upper Receiver - 13" KAK M-LOK Handguard
Platform: AR-15
Caliber: 300 Blackout
Platform
AR-15
Caliber
300 Blackout
Out of Stock
$414$414
$414$414
KAK Industry
K-SPEC 5.56X45MM NATO COMPLETE UPPER RECEIVER
Platform: AR-15
Caliber: 5.56 NATO
Platform
AR-15
Caliber
5.56 NATO
Out of Stock
Price N/APrice N/A
Price N/APrice N/A
Page 1 of 1
Page 1 of 1
Upper Receiver: most added in August 2026
The upper receiver parts builders added most in August 2026, ranked from every build on GunPartPicker.
- 1.Bravo Company Manufacturing 5.56 NATO Mid-Length Bhf AR-15 Barreled Upper - MCMR-15 - 16"Bravo Company
- 2.Bravo Company Mfg Upper Receiver Assembly w/ Laser T-Markings, Hard Coated Anodized - 4-UR-M4Bravo Company
- 3.Geissele Automatics AR-15 16 Super Duty Stripped Upper Receiver DdcGeissele
- 4.Yankee Hill Machine A3 AR-15 Upper Receiver AssemblyYankee Hill Machine
- 5.Spike's Tactical AR-15 Upper Receiver AssemblySpike's Tactical
Updated · counts come from real builds on GunPartPicker
Not sure which upper receiver to pick?
We analysed real builds to see what people actually run.
Read the full guide: Most Popular AR-15 Upper Receivers →Shop upper receivers by brand
- Aero Precision
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- Palmetto State Armory
- POF-USA
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