Balancing MPA Matrix rig w/ 18-20" barrel?

[pronelife]

use case: NRL22 (50-100yds)

scenario: with 26" barrel rifle balanced at front of mag well (pre-barricade stop). Gray Ops barricade stop made rig butt heavy; added competition side rails and 4 x Gray Ops XL steel weights to regain balance. would like to try 18-20" barrel but concerned with balance, welcome input/advice from folks running similar barrels.

build: RimX / MPA Matrix / Competition Side Rails ( 1.1 lbs) / 4 X Gray Ops XL side rail weights (2.8lbs / Gray Ops barricade stop / 26" ACE barrel ACE contour (1.250 -> 1.10 @ muzzle)) / NF ATACR 7x35

 

[Rob01]

Edited as I missed the side rail addition so much be an original Matrix. You can add internal weights. Also you can lighten the rear by taking out the screw and wheel and make it something like the new Matrix Pro II lightweight set up. Pic below. Some of the collars below. Can do that with the cheek and buttstock.

Cheek Riser Locator Collars - MasterPiece Arms, Inc.

Attach these shaft collar to your guide rods on any MPA Chassis cheek riser assy to provide a quick, easy and consistent method of relocating your cheek riser to your predetermined position. These work with chassis with and without a thumb wheel system. For those with a thumb wheel design...

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