Chassis Fitment Checklist: Action, Bolt Side, Mag Pattern & Rails
Before you swap a legacy stock for a chassis, confirm these four things so the rifle runs safely and repeatably—no surprises on range day.
Action & model
• Verify the exact action (e.g., 200 STR, SSG3000, Rem 700 pattern). Small generational changes matter.
• Check recoil lug style and any bedding blocks or sleeves you’ll remove when converting.
Bolt orientation & clearance
• Note right- or left-hand bolt. Confirm ejection path and bolt handle clearance around the chassis wall and top rail.
• Dry-cycle with your tallest expected scope caps and clip-on mounts.
Magazine pattern & latch
• Identify mag pattern (e.g., AICS) and capacity needs.
• Confirm latch style/height and feed angle; test live cycling with your duty ammo.
Mounting interfaces (what you’ll actually use)
• Centerline ARCA length (tripod/barricade balance range you want).
• Picatinny needs (top rail for day optic/clip-on; side “wings” for DOPE, lights, switches).
• M-LOK slot coverage for sling, cable routing, and future accessories.
Shooter fit (tool-less helps)
• Length of pull range to match armor/no-armor and seasonal clothing.
• Cheek height and lateral offset for a natural reticle view.
• Butt-pad adjustment to square the rifle without contorting the shoulder pocket.
Weight & balance
• Build the rifle as-used (optic, can, bipod, lights) and find the balance point.
• Plan clamp marks on ARCA and rear-bag contact so tracking is repeatable.
Transport & repeatability
• Folding needs (vehicle/case length, bolt protection).
• Record torque, rail slot positions, LOP, cheek height on a setup card.
• Arrival routine: level → torque check → 3–5 shot confirm group.
Next steps
See Tripod Shooting for Bolt Rifles, Folding Stocks & Zero Retention, and 20 MOA vs 0 MOA Scope Bases. For compatible platforms, review the SA JET-01 Chassis guide and accessories.