View Full Version : Rainier Arms UltraMatch™ 300AAC Blackout Barrel - 8.5

06-19-2012, 8:25 PM
Introducing: Rainier Arms UltraMatch™ 300AAC Blackout Barrel - 8.5

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We wanted to build an 300AAC Blackout barrel using the finest blank and mass produce them to bring them to market at the most competitive prices. Our UltraMatch™ barrels start out as Shilen blanks and contoured to our specifications. We wanted the best balance between accuracy while keeping the weight down as much as possible.


Stainless Steel Match Grade Shilen Blank
Length: 8.5″
Twist: 1:8
Gas Block Seat: .750 Diameter
Thread Pitch: 5⁄8×24
Weight: 1 lbs 3 oz
300 AAC Blackout Chamber
Pistol Gas System
6 Groove
M4 Feed Ramps
Proprietary Contour
Bead Blasted Finish

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