Dark mode is

Rainier Arms RUC PRO MK1 5.56 NATO Partial Upper Receiver - 12.5"

AR-15 Partial Upper Receiver

In stock


Rainier Arms RUC PRO MK1 5.56 NATO Partial Upper Receiver - 12.5"

As low as $600.00
Rainier Arms Free Ground Shipping

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!

 

Upper Build:

  • Rainier Arms Select 5.56 NATO Barrel - 12.5"
  • Rainier Arms Forged Upper Receiver
  • Rainier Industries PRO Series MK1 Handguard - 11.7"
  • Rainier Arms Low Pro Gas Block - .750" (Non-adjustable)
  • Rainier Industries .223/5.56 Flash Hider - 1/2x28

Weight: 3 lbs 2.6 oz

 

Please NOTE: BCG and Charging Handle NOT Included.

More Information
SKU RA-RUC-PRO-MK1-12.5-PU
Product Type AR-15 Partial Upper Receiver
Manufacturer Rainier Arms, LLC
Gas Block Diameter .750"
Thread Pitch 1/2x28
Twist Rate 1:7
Gas Length Carbine
Rail Length 11.7"
Platform AR-15
Barrel Length 12.5"
Caliber 5.56 NATO

Product Recommendations

Google Customer Reviews Google Customer Reviews