CMMG Resolute MK4 Complete Upper 5.56x45 NATO 16.1in M-LOK Armor Black 55BB40BAB
Product Description
Top off your next AR build with the CMMG RESOLUTE Mk4 Upper Group, chambered in 5.56x45mm NATO and built around a 16.10-inch barrel for an ideal balance of handling and performance. Finished in Armor Black and paired with an M-LOK free-float handguard, this upper group is designed to integrate cleanly with an AR-15/AR-platform lower of your choice. This configuration is offered without a bolt carrier group (BCG) or charging handle, making it a great option for builders who want to select their preferred components.
Product Highlights
- Complete CMMG RESOLUTE Mk4 upper group for AR-platform/AR-15 builds
- 5.56x45mm NATO chambering with a 16.10-inch barrel for versatile use
- Free-float M-LOK handguard supports modern accessory mounting and improved barrel harmonics
- Armor Black finish for a clean, durable appearance
- Sold without BCG or charging handle—ideal for custom part selection
Specs
- Brand: CMMG
- Model: Resolute
- Series: MK4
- Type: Upper receiver / complete upper group
- Caliber: 5.56x45mm NATO
- Barrel Length: 16.10 in
- Platform Fit: AR-Platform (AR-15)
- Handguard: M-LOK free-float
- Receiver Finish: Armor Black
- Handguard Finish: Armor Black / Black
- Muzzle Thread Pattern: 1/2x28
- Included Components: Upper group only (no BCG, no charging handle)
- UPC: 810103473461
- Manufacturer Part Number: 55BB40BAB
Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the products manufacturer.
Original: $525.98
-65%$525.98
$184.09CMMG Resolute MK4 Complete Upper 5.56x45 NATO 16.1in M-LOK Armor Black 55BB40BAB
Product Description
Top off your next AR build with the CMMG RESOLUTE Mk4 Upper Group, chambered in 5.56x45mm NATO and built around a 16.10-inch barrel for an ideal balance of handling and performance. Finished in Armor Black and paired with an M-LOK free-float handguard, this upper group is designed to integrate cleanly with an AR-15/AR-platform lower of your choice. This configuration is offered without a bolt carrier group (BCG) or charging handle, making it a great option for builders who want to select their preferred components.
Product Highlights
- Complete CMMG RESOLUTE Mk4 upper group for AR-platform/AR-15 builds
- 5.56x45mm NATO chambering with a 16.10-inch barrel for versatile use
- Free-float M-LOK handguard supports modern accessory mounting and improved barrel harmonics
- Armor Black finish for a clean, durable appearance
- Sold without BCG or charging handle—ideal for custom part selection
Specs
- Brand: CMMG
- Model: Resolute
- Series: MK4
- Type: Upper receiver / complete upper group
- Caliber: 5.56x45mm NATO
- Barrel Length: 16.10 in
- Platform Fit: AR-Platform (AR-15)
- Handguard: M-LOK free-float
- Receiver Finish: Armor Black
- Handguard Finish: Armor Black / Black
- Muzzle Thread Pattern: 1/2x28
- Included Components: Upper group only (no BCG, no charging handle)
- UPC: 810103473461
- Manufacturer Part Number: 55BB40BAB
Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the products manufacturer.
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Product Information
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Description
Product Description
Top off your next AR build with the CMMG RESOLUTE Mk4 Upper Group, chambered in 5.56x45mm NATO and built around a 16.10-inch barrel for an ideal balance of handling and performance. Finished in Armor Black and paired with an M-LOK free-float handguard, this upper group is designed to integrate cleanly with an AR-15/AR-platform lower of your choice. This configuration is offered without a bolt carrier group (BCG) or charging handle, making it a great option for builders who want to select their preferred components.
Product Highlights
- Complete CMMG RESOLUTE Mk4 upper group for AR-platform/AR-15 builds
- 5.56x45mm NATO chambering with a 16.10-inch barrel for versatile use
- Free-float M-LOK handguard supports modern accessory mounting and improved barrel harmonics
- Armor Black finish for a clean, durable appearance
- Sold without BCG or charging handle—ideal for custom part selection
Specs
- Brand: CMMG
- Model: Resolute
- Series: MK4
- Type: Upper receiver / complete upper group
- Caliber: 5.56x45mm NATO
- Barrel Length: 16.10 in
- Platform Fit: AR-Platform (AR-15)
- Handguard: M-LOK free-float
- Receiver Finish: Armor Black
- Handguard Finish: Armor Black / Black
- Muzzle Thread Pattern: 1/2x28
- Included Components: Upper group only (no BCG, no charging handle)
- UPC: 810103473461
- Manufacturer Part Number: 55BB40BAB
Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the products manufacturer.
