RA Ultramatch MOD2 6.5 Grendel Barrel W/Gas Bleed Off Block

RA Ultramatch MOD2 6.5 Grendel Barrel W/Gas Bleed Off Block

You save $445.00
SKU: ra-ultramatch-mod2-6.5-grendel-barrel-w/gas-bleed-off-block

Introducing our MOD2 UltraMatch barrel using the finest blank. Our goal is to mass produce them to bring them to market at the most competitive prices. We wanted the best balance between accuracy while keeping the weight down as much as possible. We are so confident in our UltraMatch barrels that we will offer a 100% money back guarantee within 90 days of purchase. If you aren't completely satisfied with the barrel for any reason, return it for a full refund, no questions asked.


Stainless Steel Match Grade Blank
TiN Extension
Length: 18"
Twist: 1:8
Thread Pitch: 5/8 X 24
.800 Gas Block Seat
6.5 Grendel Chamber
Rifle Gas System
M4 Feed Ramps
Proprietary Contour
Bead Blasted Finish/Polished
Weight: 2 lbs 3.7 oz

Rainier Arms Low Profile Gas Block:

416 SS
Finish: Melonite
Ultra Low Profile.
Weight 1.7 oz
Made in the USA
Adjustable Gas Block:

Bleed Off”, direct impingement, gas block for the AR15 platform adjusts the gas flow by bleeding the gas out of the block instead of restricting the flow like conventional adjustable blocks. Results:

The pressure used in the block is reduced only to the amount required to drive the bolt carrier. The remaining gas / pressure are bled out of the block allowing the system to run much cleaner and cooler.
Reduction of felt recoil.
Patent pending adjustment detent is located outside of the block and therefore no contamination.
The gas adjustment screw does not restrict the gas flow; therefore there is no erosion or seizing of the screw / no loss of detent due to carbon build up. Although it is removable, we have added a safety mechanism, which stops you from unintentionally backing the screw all the way out.
When using SBR’s and / or suppressors the bleed off port allows the excessive pressure to be exhausted out of the block reducing blow back.

Gas Block Material: 416 SS
Finish: Melonite or Matt Stainless
Barrel Diameter:0.625" -0.875"-0.750" - 0.936"
Weight: 1.80 oz
Length: 1.00"
Attachment Type: Solid
Gas Adjustment: (Patent Pending) 30 Locked Positions, Front Of Block
Bleed Off Port: (Patent Pending) Front Of Block

Gas Block - Assembled
(2) 10-32 x 3/16" Socket Head Cap Screws
(1) Gas Tube Roll Pins
(1) 3/32 X 6" L-Shaped Hex Keys