Caliber: 5.56 NATO
Barrel Length: 15.3" P/W FH to 16”
Barrel Profile: Pencil
Barrel Steel: 4150 Chrome Moly Vanadium
Barrel Finish: Parkerized
Chrome Lining: Yes
Muzzle Thread Pattern: 1/2" x 28
Twist Rate: 1/7
Barrel Extension: M4
Gas System Length: Carbine
Diameter at Gas Block: .750"
Gas Block Type: Low profile
.625” Rifle Height Front Sight Base
Muzzle Device: 3 Prong
Receiver Material: Forged 7075-T6
Upper Receiver Type: 605 “shaved” M16 w/o feed ramps
Handguard Type: M16A1 Triangular, with heat shields
Bolt Material: Carpenter 158 Steel, Chrome
Bolt Carrier Profile: Full Auto, No Serrations, Chrome
Overall Length: 24 inches
Weight (as configured): 3 lbs

Features

The H&R 605 style uppers closely replicate the early attempt at creating a carbine for the M16 platform. The upper receiver is the “shaved” 605 style in a Black Type 3 Hard Coat Anodized. The 3-prong flash hider is pinned in place to get over 16”. These complete uppers are hand fitted and assembled right here in the United States of America.

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Shipping Restrictions

It is the customer’s responsibility for understanding state laws regarding all purchases made. For a comprehensive list of all Shipping Restrictions, please refer to our Shipping Restrictions By State Page found Here.

All NFA Rules Apply

These items are controlled by the U.S. Government and authorized for export only to the country of ultimate destination for use by the ultimate consignee or end-user(s) herein identified. They may not be resold, transferred, or otherwise disposed of, to any other country or to any person other than the authorized ultimate consignee or end-user(s), either in their original form or after being incorporated into other items, without first obtaining approval from the U.S. government or as otherwise authorized by U.S. law and regulations.

Local Law Compliance

Certain firearm parts and accessories, including AR-style upper receivers, are subject to complex and frequently changing federal, state, and local laws and regulations. While an upper receiver may be lawfully sold and shipped as a component, the legality of possessing, assembling, configuring, or using an upper receiver in certain states (e.g., California, Washington State) and localities depends on how it is assembled, combined with other components, and ultimately used. You are solely responsible for ensuring that any assembly, configuration, possession, or use complies with all federal, state, and local laws, including any so-called “assault weapon” bans and short-barreled rifle restrictions. We do not provide legal advice and are not responsible for unlawful configurations or uses.

WARNING: Handling firearms or firearms parts can expose you to lead and other petroleum products known to the State of California to cause cancer, birth defects, or other reproductive harm. Wash hands thoroughly after handling. For more information go to www.p65warnings.ca.gov (CA Health and Safety Code Section 25249.6).