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Rock River Arms X-1 .308/7.62X51mm Completed Upper Up to $95.01 Off w/ Free S&H — 2 models

Rock River Arms Completed Upper Receiver, X-1 .308/7.62x51mm, 18 Inch Barrel, 1-10 Twist, 5/8-24 Threat, Free-Float Handguard, Brake, Black, X308A0700B.V1
Rock River Arms Completed Upper Receiver, X-1 .308/7.62x51mm, 18 Inch Barrel, 1-10 Twist, 5/8-24 Threat, Free-Float Handguard, Brake, Tan, X308A0700T.V1
Rock River Arms Completed Upper Receiver, X-1 .308/7.62x51mm, 18 Inch Barrel, 1-10 Twist, 5/8-24 Threat, Free-Float Handguard, Brake, Black, X308A0700B.V1
1 of 2 images
Rock River Arms Completed Upper Receiver, X-1 .308/7.62x51mm, 18 Inch Barrel, 1-10 Twist, 5/8-24 Threat, Free-Float Handguard, Brake, Black, X308A0700B.V1
Rock River Arms Completed Upper Receiver, X-1 .308/7.62x51mm, 18 Inch Barrel, 1-10 Twist, 5/8-24 Threat, Free-Float Handguard, Brake, Tan, X308A0700T.V1
2 of 2 images
Rock River Arms Completed Upper Receiver, X-1 .308/7.62x51mm, 18 Inch Barrel, 1-10 Twist, 5/8-24 Threat, Free-Float Handguard, Brake, Tan, X308A0700T.V1

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Product Info for Rock River Arms X-1 .308/7.62X51mm Completed Upper

The Rock River Arms X-1 .308/7.62X51mm Completed Upper was developed in order to be the best item for any person looking for a top quality selection..image

Formulated working with several of the most sturdy and long lasting materials available, these AR15 Upper Receivers through Rock River Arms will provide you with something that will give you years of dependability.

Rock River Arms has been developing high-quality products for a very long time, and the Rock River Arms X-1 .308/7.62X51mm Completed Upper is their very own approach to demonstrating how much they care.

At OpticsPlanet, we make it our responsibility to get the most suitable product for your requirements, and presenting the Rock River Arms X-1 .308/7.62X51mm Completed Upper is one thing that we are happy to offer.

WARNING: California`s Proposition 65

Specifications for Rock River Arms X-1 .308/7.62X51mm Completed Upper:

Manufacturer: Rock River Arms
Caliber: 7.62x51mm NATO, .308 Winchester
Overall Length: 26 in
Barrel Length: 18 in
Barrel Profile: Heavy
Gas System Length: Mid Length
Barrel Twist Rate: 1-10
Firearms Threads Per Inch: 5/8x24
Handguard Type: Free-Float
Muzzle Device: Brake
Finish: Anadized
Gas Block Journal Size-Diameter: .875 in
Handguard Length: 17 in
Gun Rail: Full Top Rail
Weight: 7.17 lb
Barrel Material: 416R Stainless Steel
Bolt Carrier Group Included: COM-SPEC
Magazine Included: No
Condition: New
Mount Type: M-LOK

Package Contents:

  • Rock River Arms X-1 .308/7.62X51mm Completed Upper
  • Bolt Carrier Group
  • Charging Handle Assembly

Rock River Arms X-1 .308/7.62X51mm Completed Upper Orderable Models

List of Orderable Models

  • Rock River Arms Completed Upper Receiver, X-1 .308/7.62x51mm, 18 Inch Barrel, 1-10 Twist, 5/8-24 Threat, Free-Float Handguard, Brake, Black, X308A0700B.V1 , MPN: X308A0700B.V1 , UPC: 842834101313 , Code: 1WN-URC-XCYT-X308A0700B-V1
  • Rock River Arms Completed Upper Receiver, X-1 .308/7.62x51mm, 18 Inch Barrel, 1-10 Twist, 5/8-24 Threat, Free-Float Handguard, Brake, Tan, X308A0700T.V1 , MPN: X308A0700T.V1 , UPC: 842834101320 , Code: 1WN-URC-XCYT-X308A0700T-V1

Rock River Arms X-1 .308/7.62X51mm Completed Upper Unavailable & Discontinued Models

List of Unorderable Models

  • DEMO, Rock River Arms Completed Upper Receiver, X-1 .308/7.62x51mm, 18 Inch Barrel, 1-10 Twist, 5/8-24 Threat, Free-Float Handguard, Brake, Tan, X308A0700T.V1 , MPN: X308A0700T.V1-DEMO , Code: 1WN-URC-XCYT-X308A0700T-V1-DEMO
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Last updated 2026-10-09 UTC.