Get a conservative starting-point recommendation for buffer weight and spring setup with troubleshooting steps.
Recommended starting setup
Buffer: H1 (3.8 oz class)
Spring: Quality mil-spec spring
Inputs look near balanced. Start in the middle and tune one variable at a time.
Confidence: MEDIUM
Internal trend score: 0
This assistant applies a conservative trend model from gas-system length, barrel bucket, suppressor use, ammo pressure profile, and optional ejection observations.
Output is a baseline for test-and-tune workflow only. Always change one variable at a time and validate reliability with your actual rifle, magazines, and ammunition.
Gas-system timing fundamentals
A neutral explanation of gas system length tradeoffs, port pressures, and how these design decisions affect reliability, recoil, and parts wear.
Barrel length and dwell-time context
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.
Suppressor setup and back-pressure tradeoffs
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.
Muzzle-device effects on overall rifle behavior
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.