CMMG DISSENT Mk4 5.56mm NATO AR-Style Upper Assembly 10.5" Armor Black
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Specifications
Material 7075-T6 aluminum upper receiver with 4140 chrome moly nitride barrel
Weight 2.8 pounds
Description
Product Overview
The CMMG DISSENT Mk4 compact-action 5.56mm NATO upper assembly is built for an ultra-compact AR-style setup using a direct-impingement system with a unique compact action that eliminates the need for a traditional buffer system. The result is a shorter overall build length while keeping standard AR-style lower compatibility and familiar ergonomics. This configuration features a 10.5-inch 4140 chrome moly nitride barrel, a 9.6-inch M-LOK handguard, and an optics-ready Picatinny rail for straightforward mounting options.
Key Features
- 10.5-inch 4140 chrome moly barrel with salt bath nitride finish for improved durability
- 7075-T6 aluminum upper receiver for strong, lightweight construction
- Direct impingement compact-action design reduces the need for a buffer system in typical AR layouts
- Proprietary 9.6-inch M-LOK handguard with pistol-length gas system
- Adjustable .750 inches gas block for tuning and reliability
- Non-reciprocating left-side charging handle for ambidextrous-friendly operation when paired with the right controls on your build plan (NFA rules apply where applicable to the full firearm setup)
Add this DISSENT Mk4 upper to a compatible Mk4 or mil-spec AR-15 lower receiver to build a compact 5.56mm NATO setup with modern mounting options and a short, efficient profile.
WARNING: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to WWW.P65WARNINGS.CA.GOV
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- SKU:
- 55B8D86AB
- UPC:
- 810097509276
- BUDS ID:
- 156331
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| Material | 7075-T6 aluminum upper receiver with 4140 chrome moly nitride barrel | Aluminum handguard and anodized receiver with a black nitride treated steel barrel | Black nitride steel barrel; anodized aluminum receiver/handguard (exact alloy not specified) | 6061-T6 aluminum handguard/rail components with a steel barrel (exact alloy and finish not specified in provided data)}}}]}]}]}]}]}] | 7075-T6 aluminum upper receiver with a 4150 CMV steel barrel |
| Weight (lbs) | 2.8 | N/A | N/A | N/A | 2.6 |
| Actions | Current Item |
