Core Platform Receivers & actions The serialized or primary structural interface around which a platform is organized. Pattern, generation, dimensions, and legal classification must be confirmed before selecting connected components.
OPEN COMPONENT GUIDANCE → Core Platform Barrels Chambering, profile, length, twist, extension or action interface, gas location, muzzle thread, and expected ammunition should be evaluated as one specification.
OPEN COMPONENT GUIDANCE → Mounting Interface Handguards & forends The forward support-hand interface protects operating components and may provide accessory-mounting positions. Platform-specific mounting, clearance, rigidity, and heat behavior matter.
OPEN COMPONENT GUIDANCE → Operating System Operating systems & bolt groups Bolt, carrier, piston, gas, recoil, and return components are model-specific systems. Current manufacturer documentation should control inspection and compatibility decisions.
OPEN COMPONENT GUIDANCE → Controls Charging & action controls Charging handles, bolt controls, selectors, safeties, slide controls, and action releases must match the platform while remaining accessible with the complete optic and accessory configuration.
OPEN COMPONENT GUIDANCE → Fit Stocks, braces & grips Primary contact points influence fit, length of pull, control reach, balance, storage, and transport. Product classification and local feature restrictions require current legal review.
OPEN COMPONENT GUIDANCE → Muzzle Interface Muzzle devices & suppressor mounts Flash hiders, brakes, compensators, thread protectors, chokes, and suppressor mounts must match threads, shoulder geometry, bore, timing method, host limits, and applicable law.
OPEN COMPONENT GUIDANCE → Support Equipment Slings & retention Sling type, attachment points, adjustment, interference, transport, and platform balance should be reviewed together. Mount locations must remain clear of controls and operating parts.
OPEN COMPONENT GUIDANCE →