AR15.BUILD Tools
Use these tools for broad planning context. Outputs are estimate ranges, not exact performance predictions or safety guarantees.
Estimate likely muzzle velocity ranges by caliber family and barrel-length bucket.
Open toolEstimate likely peak impulse-noise ranges and view conservative hearing-risk guidance.
Open toolGet a conservative starting-point recommendation for buffer weight and spring setup with troubleshooting steps.
Open toolEstimate hold values (MOA, MIL, and inches) with near/far zero context and a quick distance table.
Open toolHow barrel length changes behavior
A neutral guide to how barrel length affects velocity and handling, how profile changes weight and heat management, and how twist rate stabilizes different bullet weights.
Muzzle blast and device tradeoffs
A neutral overview of how flash hiders, compensators, and brakes work, what each is designed to do, and the tradeoffs in recoil, flash, and concussion.
Suppressor-host setup fundamentals
An examination of muzzle device options for suppressed AR-15s, covering thread pitch standards, mount systems, alignment considerations, and the tradeoffs between direct-thread, QD, and taper-mount interfaces.
Gas-system timing and recoil context
A neutral explanation of gas system length tradeoffs, port pressures, and how these design decisions affect reliability, recoil, and parts wear.