MonoBloc Upper Features
The MonoBloc Upper features a HM barrel with an integral machined patented gas block, and a carbine gas system. It is also 4150 Chromoly, match grade, tripled honed, and button rifled. Its handguard is free-floating and uses a Picatinny rial, Magpul M-LOK, and machined from 6061-T6 aluminum. Upper and Lower receiver are made of 7075-T6 aluminum with a hard coat anodized finish. The MonoBloc Upper also includes a patented HMB bolt, Mil-Spec components, charging handle, and a dust cover with an American Flag.
MonoBloc Upper Specifications
- Caliber: 5.56x45mm NATO
- Model: MonoBloc Upper
- Barrel Length Range: 12″ to 12.99″
- Sights: 16″ to 16.99″
- Handguard Finish: Black Hard Coat Anodized
- Handguards: 10.37″ M-LOK Free-Float
- Receiver Finish: Black Hard Coat Anodized
- Receiver Material: 7075 T6 Aluminum
- Twist: 1:8″
- Weight: 3.14 lbs
- Barrel Description: 4150 Chrome Moly Match Grade
- Barrel Finish: Black Cerakote
- Barrel Length: 16″
Frequently Asked Questions About This Product
Why buy HM Defense MonoBloc Upper 5.56 NATO / .223 Rem 16" Barrel from Miami Shooters Supply?
We’re a trusted firearms dealer offering fast shipping, competitive pricing, and 100% compliance with U.S. federal firearm laws. All orders ship from our licensed facility with full tracking and expert customer service.
Where can I buy HM Defense MonoBloc Upper 5.56 NATO / .223 Rem 16" Barrel?
You can purchase this item directly on our website and have it shipped to your local FFL dealer. You can also visit us in-store in Miami, Florida.
Is HM Defense MonoBloc Upper 5.56 NATO / .223 Rem 16" Barrel available now?
Availability is shown live on this page. If the “Add to Cart” button is visible, this item is currently in stock and ready to ship.
What category does this product belong to?
This product is listed under: RIFLES, Uppers.
What tags or features does this product have?
Key features and tags for this product include: RIFLES, Uppers.
Is this product legal in my state?
It is your responsibility to ensure this item is legal in your state or locality. We ship only to valid FFL dealers in compliance with U.S. laws. Always check your local regulations.
FFL Transfer & Firearms Laws for HM Defense MonoBloc Upper 5.56 NATO / .223 Rem 16" Barrel
All firearms, including the HM Defense MonoBloc Upper 5.56 NATO / .223 Rem 16" Barrel, must be shipped to a licensed Federal Firearms License (FFL) dealer. You will be required to complete a background check and any necessary paperwork before taking possession.
How It Works
- Place your order online.
- Provide your preferred FFL dealer information.
- We ship the firearm directly to your FFL.
- You complete the background check and pickup at the FFL.
Legal Compliance
We comply with all federal and state firearm laws. It is your responsibility to ensure the HM Defense MonoBloc Upper 5.56 NATO / .223 Rem 16" Barrel is legal in your state. Some states may have restrictions on certain firearm models or features.
Helpful Resources
Need assistance? Contact our Miami store for help with FFL transfers and firearm compliance.
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