I feel that you are missing out on the double benefits of arca that you could have by not using an arca-to-arca between the arca on your other arca there.My most recent completed project - https://www.ocabj.net/precision-rifle-project-series-defiance-machine-anti-lightweight-rifle-build/
Goal was a (relatively) lightweight rifle that is precise that can handle sustained strings of fire (compared to an off-the-shelf pencil barrelled rifle).
- Defiance Machine anTI short action, .480" bolt face, nitride finish, Guardian cut
- Proof Research carbon fiber wrapped barrel, 22" length, 1:8" twist, 6.5mm Creedmoor Defiance Pre-Fit
- TriggerTech Special 2-Stage Pro Curve
- MDT HNT26 chassis, Cobalt Green, Arca rail, non-folding
- Area 419 Hellfire Match muzzle brake
- Defiance Machine 20 MOA aluminum scope base
- Spuhr SP-5001 35mm diameter, 30mm / 1.18" tall mount
- Leupold Mark 5HD 3.6-18x44mm TREMOR3
- RRS SOAR 240mm Universal Arca rail
6 lb 3 oz - rifle only
8 lb 6 oz - rifle with optic
8 lb 11 oz - rifle with optic + RRS arca rail (read the article on why I added this)
11 lb - fully configured rifle with MDT CKYE-POD triple pull
Berger 144 LRHT + 42.2 GR H4350 + Alpha Munitions SRP + CCI BR4 ~ 2695 fps give or take depending on temps.
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Imagine how much more handy it would be, if you could just extend your arca 8" for extra stability on your bipod.
Or even stacking a third arca rail under there
All silliness aside, that's a pretty nice rifle you got there