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Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver w/ Free Shipping — 4 models

Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 10.5 in, RA-MK1-10.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 11.5 in, RA-MK1-11.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 12.5 in, RA-MK1-12.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 16 in, RA-MK1-16-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 10.5 in, RA-MK1-10.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 10.5 in, RA-MK1-10.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 10.5 in, RA-MK1-10.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 10.5 in, RA-MK1-10.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 10.5 in, RA-MK1-10.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 10.5 in, RA-MK1-10.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 10.5 in, RA-MK1-10.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 11.5 in, RA-MK1-11.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 11.5 in, RA-MK1-11.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 11.5 in, RA-MK1-11.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 11.5 in, RA-MK1-11.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 11.5 in, RA-MK1-11.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 11.5 in, RA-MK1-11.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 11.5 in, RA-MK1-11.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 12.5 in, RA-MK1-12.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 12.5 in, RA-MK1-12.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 12.5 in, RA-MK1-12.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 12.5 in, RA-MK1-12.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 12.5 in, RA-MK1-12.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 12.5 in, RA-MK1-12.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 12.5 in, RA-MK1-12.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 16 in, RA-MK1-16-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 16 in, RA-MK1-16-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 16 in, RA-MK1-16-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 16 in, RA-MK1-16-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 16 in, RA-MK1-16-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 16 in, RA-MK1-16-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 16 in, RA-MK1-16-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 10.5 in, RA-MK1-10.5-PU-BLK
1 of 32 images
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 10.5 in, RA-MK1-10.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 11.5 in, RA-MK1-11.5-PU-BLK
2 of 32 images
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 11.5 in, RA-MK1-11.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 12.5 in, RA-MK1-12.5-PU-BLK
3 of 32 images
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 12.5 in, RA-MK1-12.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 16 in, RA-MK1-16-PU-BLK
4 of 32 images
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 16 in, RA-MK1-16-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 10.5 in, RA-MK1-10.5-PU-BLK
5 of 32 images
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 10.5 in, RA-MK1-10.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 10.5 in, RA-MK1-10.5-PU-BLK
6 of 32 images
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 10.5 in, RA-MK1-10.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 10.5 in, RA-MK1-10.5-PU-BLK
7 of 32 images
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 10.5 in, RA-MK1-10.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 10.5 in, RA-MK1-10.5-PU-BLK
8 of 32 images
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 10.5 in, RA-MK1-10.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 10.5 in, RA-MK1-10.5-PU-BLK
9 of 32 images
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 10.5 in, RA-MK1-10.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 10.5 in, RA-MK1-10.5-PU-BLK
10 of 32 images
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 10.5 in, RA-MK1-10.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 10.5 in, RA-MK1-10.5-PU-BLK
11 of 32 images
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 10.5 in, RA-MK1-10.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 11.5 in, RA-MK1-11.5-PU-BLK
12 of 32 images
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 11.5 in, RA-MK1-11.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 11.5 in, RA-MK1-11.5-PU-BLK
13 of 32 images
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 11.5 in, RA-MK1-11.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 11.5 in, RA-MK1-11.5-PU-BLK
14 of 32 images
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 11.5 in, RA-MK1-11.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 11.5 in, RA-MK1-11.5-PU-BLK
15 of 32 images
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 11.5 in, RA-MK1-11.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 11.5 in, RA-MK1-11.5-PU-BLK
16 of 32 images
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 11.5 in, RA-MK1-11.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 11.5 in, RA-MK1-11.5-PU-BLK
17 of 32 images
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 11.5 in, RA-MK1-11.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 11.5 in, RA-MK1-11.5-PU-BLK
18 of 32 images
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 11.5 in, RA-MK1-11.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 12.5 in, RA-MK1-12.5-PU-BLK
19 of 32 images
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 12.5 in, RA-MK1-12.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 12.5 in, RA-MK1-12.5-PU-BLK
20 of 32 images
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 12.5 in, RA-MK1-12.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 12.5 in, RA-MK1-12.5-PU-BLK
21 of 32 images
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 12.5 in, RA-MK1-12.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 12.5 in, RA-MK1-12.5-PU-BLK
22 of 32 images
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 12.5 in, RA-MK1-12.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 12.5 in, RA-MK1-12.5-PU-BLK
23 of 32 images
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 12.5 in, RA-MK1-12.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 12.5 in, RA-MK1-12.5-PU-BLK
24 of 32 images
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 12.5 in, RA-MK1-12.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 12.5 in, RA-MK1-12.5-PU-BLK
25 of 32 images
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 12.5 in, RA-MK1-12.5-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 16 in, RA-MK1-16-PU-BLK
26 of 32 images
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 16 in, RA-MK1-16-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 16 in, RA-MK1-16-PU-BLK
27 of 32 images
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 16 in, RA-MK1-16-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 16 in, RA-MK1-16-PU-BLK
28 of 32 images
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 16 in, RA-MK1-16-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 16 in, RA-MK1-16-PU-BLK
29 of 32 images
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 16 in, RA-MK1-16-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 16 in, RA-MK1-16-PU-BLK
30 of 32 images
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 16 in, RA-MK1-16-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 16 in, RA-MK1-16-PU-BLK
31 of 32 images
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 16 in, RA-MK1-16-PU-BLK
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 16 in, RA-MK1-16-PU-BLK
32 of 32 images
Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 16 in, RA-MK1-16-PU-BLK

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Questions & Answers
4 Models Available
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ATTENTION! We currently do not ship this product to AK, CA, HI, IL, NY, WA, P.O. Boxes, and U.S. Territories. Please see our policies for more information.

Product Info for Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver

Introducing the RUC PRO MK1 Partial Upper. Bringing the highest quality parts to the market, while offering the best value as well. This partial upper utilizes a Rainier Arms Low Pro nonadjustable gas block on our new and improved Rainier Arms Select barrel. Pairing up with new PRO series MK1 handguard to provide shooters with a rock solid handguard that can take any abuse. Throw in your favorite charging handle and bolt carrier group and you are good to go!image

Specifications for Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver:

Manufacturer: Rainier Arms
Caliber: 5.56x45mm NATO
Barrel Profile: Medium
Barrel Twist Rate: 1-8
Firearms Threads Per Inch: 1/2x28
Finish: Nitride
Color: Black
Gun Model: AR-15
Fabric/Material: 416R Stainless Steel Nitrided
Gas Block Journal Size-Diameter: .750 in
Handguard Style: M-LOK w/ Top Picatinny Rail System
Gun Make: AR Platform
Bolt Carrier Group Included: No
Charging Handle Included: No
Magazine Included: No
Condition: New

Features of Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver

  • Rainier Arms Select 5.56 NATO Barrel - 10.5"
  • Rainier Arms Forged Upper Receiver
  • Rainier Industries PRO Series MK1 Handguard - 9.55"
  • Rainier Arms Low Pro Gas Block - .750" (Non-adjustable)
  • Rainier Industries .223/5.56 Flash Hider - 1/2x28
  • Carbine Gas Length
  • Weight: 2 lbs 14 oz

Package Contents:

  • Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver

What firearm models does the manufacturer say Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver is compatible with?

The manufacturer suggests that Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver is compatible with AR-15

Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver Orderable Models

List of Orderable Models

  • Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 11.5 in, RA-MK1-11.5-PU-BLK , MPN: RA-RUC-PRO-MK1-11.5-PU-BLK , UPC: 744985352418 , Code: 4ZM-UFH-RA26-RA-MK1-11-5-PU-BLK
  • Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 16 in, RA-MK1-16-PU-BLK , MPN: RA-RUC-PRO-MK1-16-PU-BLK , UPC: 744985352432 , Code: 4ZM-UFH-RA26-RA-MK1-16-PU-BLK
  • Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 12.5 in, RA-MK1-12.5-PU-BLK , MPN: RA-RUC-PRO-MK1-12.5-PU-BLK , UPC: 744985352425 , Code: 4ZM-UFH-RA26-RA-MK1-12-5-PU-BLK
  • Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver, Black, 10.5 in, RA-MK1-10.5-PU-BLK , MPN: RA-RUC-PRO-MK1-10.5-PU-BLK , UPC: 744985352401 , Code: 4ZM-UFH-RA26-RA-MK1-10-5-PU-BLK
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