Rainier Arms UltraMatch Billet Upper

[John Hwang]

Rainier Arms Manufacturing, LLC is releasing a Billet Upper in the next 30-60 days. Pricing is undetermined at this time but should be in line with other billet offerings in 7075 around $225-250 Retail.

CNC Machined from solid Billet 7075 Aluminum. If you want to build a high end UltraMatch Upper, look no further than the Rainier Arms UltraMatch Billet Upper. We will offer these in A3 & A4 configuration.


The most critical features are:

-Parallelism between the picatinny rail, main center bore and the centerline of the mounting lugs
-Perpendicularity between the centerline of the lugs and the barrel mating face (at the front of the threads)
-Flatness of the barrel mating face

We are holding .0003 or better on all of those measurements. Competitor uppers are between .001 and .003 on the perpendicularity and parallelism.

[John Hwang]

Eugene's AR built using one of Rainier Arms Pre-production Billet Uppers.

[John Hwang]

Description:

CNC Machined from solid Billet 7075 Aluminum. If you want to build a high end UltraMatch Upper, look no further than the Rainier Arms UltraMatch Billet Upper.

The most critical features are:

* Parallelism between the picatinny rail, main center bore and the centerline of the mounting lugs
* Perpendicularity between the centerline of the lugs and the barrel mating face (at the front of the threads)
* Flatness of the barrel mating face

We are holding .0003 or better on all of those measurements. Competitor uppers are between .001 and .003 on the perpendicularity and parallelism.

Configuration:

* A3 Flat-Top
* A4 Flat-Top - w/M4 Feedramps


PRICE: $227.95

[John Hwang]

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