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.
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