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Reviews & Ratings for Rainier Arms MK12 223 Wylde Partial Upper Receiver — 1 review

(1 review)
Rainier Arms MK12 223 Wylde Partial Upper Receiver
Rainier Arms MK12 223 Wylde Partial Upper Receiver
$1,229.00 $1,050.00 Save 15%
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Fantastic Upper

by Mike B, Verified Owner from IN, United States Written on April 9, 2025
The MK12 upper from Rainier Arms is fantastic. It is finish is amazing and the PRI parts make this well worth the money. The match grade barrel is an amazing addition. I currently own the MK12 MOD-0 from PRI and this upper is just as well made for less than half the price.
If you are in the market for an MK12 build.. this is the way to go.
Pros:
  • Fit & finish
Cons:
  • None
Best Used for:
  • MK12 build or SPR rifle
Would recommend: Yes
Was it helpful to you? Yes | No
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