Stock
The rear interface establishes length of pull, cheek position, and overall balance.
Large-frame stocks and extensions must match the specific receiver-extension system.
Recognizable platform imagery, selectable component systems, brand and gear connections, build paths, and responsible public technical guidance.
A large-frame, AR-family rifle architecture commonly associated with full-power rifle cartridges. Unlike the small-frame AR market, major dimensions and interface standards can vary significantly by manufacturer and generation.
11 SELECTABLE COMPONENT SYSTEMS

The rear interface establishes length of pull, cheek position, and overall balance.
Large-frame stocks and extensions must match the specific receiver-extension system.
Public technical orientation—not assembly instruction. Exact dimensions, interfaces, specifications, service procedures, and lawful configuration are model and jurisdiction dependent. Use current manufacturer documentation and a qualified armorer or gunsmith where appropriate.
Large-frame AR rifles resemble the AR-15 but do not share one universal dimensional standard. Routine access usually begins at the receiver pins, followed by removal of the charging handle and the model-specific large-frame carrier group.

Point in a safe direction, remove the magazine, lock the bolt to the rear, and inspect the chamber, bolt face, and magazine well visually and physically. Move every cartridge and loaded magazine away from the bench.
Large-frame magazines and cartridges can resemble other patterns; account for the actual caliber and every ammunition source.
This guide is a platform-level orientation to ordinary field stripping only. Before disassembly, use the manufacturer’s current manual for the exact make, model, caliber or gauge, generation, configuration, specifications, safety instructions, and function-check sequence. Stop if the firearm differs from the description, a part resists normal hand pressure, or damage is suspected. Detailed bolt, trigger, firing-pin, extractor, ejector, gas-system, magazine-tube, headspace, timing, or fitted-component work belongs to a qualified armorer or gunsmith.
Every system in the diagram connects to a dedicated gear or component workspace.
Editorial starting points for model-specific research—not universal rankings, guarantees, or substitutes for compatibility review.
Use cases describe planning contexts only. The complete configuration, user, environment, and applicable law control suitability.
PLATFORM IMAGE: DeadEye Syndicate AR-10 Setup ↗ · User-supplied studio reference. Displayed as a neutral technical reference; manufacturer and creator endorsement is not implied.