Q unveils the Boombox after 700+ days of development: a lightweight AR-10 pattern rifle in 8.6 Blackout featuring 1:3 twist rate, two-piece bolt carrier, pinch barrel system, and bufferless operation.
Primary Weapons Systems unveils the MK216 MOD 2 at SHOT Show 2026: a .308 piston rifle with proprietary bore evacuator technology, user-tunable gas block, and 3,000+ round suppressed maintenance intervals.
Palmetto State Armory confirms the X9 delayed-blowback handgun platform is returning to development after overwhelming customer demand. Design changes are coming following operating system modifications.
Everything that matters from SHOT Show 2026: computational optics from Maztech and Revic, the suppressor boom, rifles from Geissele and Noveske, PSA's modular AXR ecosystem, and 30+ product announcements.
SIG Sauer teams up with world champion shooter Daniel Horner for the P365-DH3 series: competition-inspired carry pistols featuring slide-integrated expansion chamber, 3.7" barrel, and polymer or AXG alloy grip options.
Primary Arms unveils the PLx Compact 1.5-12x36 RDB with Japanese ED glass, diffractive Red Dot Bright reticle, AutoLive motion-sensing illumination, and updated Top Cap Reflex Mount V2.
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Complete AR-15 5.56 barrel length comparison from 10.5" to 20". Compare muzzle velocity, effective range, overall length, dwell time, and gas system compatibility to match your mission.
Pick the right 5.56 / .223 ammo for your rifle and mission. Learn bullet weights vs twist rate, short barrel tradeoffs, projectile types (FMJ, OTM, bonded, copper), and practical buying tips with an interactive ammo finder.
Step-by-step first AR-15 build guide: choose a stripped lower via FFL, install quality lower parts kit and trigger, add grip and stock, then pair with vetted complete upper from PSA, Aero, BCM, or Geissele by budget.
Master AR-15 gas system and buffer tuning for suppressed and unsuppressed rifles. Match barrel length, gas system, buffer weight, and springs for reliable cycling. Includes troubleshooting.
Master optic zeroing with step-by-step process for iron sights, red dots, and LPVOs. Includes range prep checklists, mechanical offset tips, and confirmation drills.
Choose the best AR-15 caliber for your mission. Data-driven comparison of 5.56 NATO, .300 Blackout, 6.5 Grendel, 7.62x39, and 6mm ARC. Velocity, energy, cost, suppressor performance, and mission-specific recommendations.
Select the best AR-15 trigger for your build. Compare single-stage, two-stage, match, and competition triggers with pull-weight guidance, reliability notes, and brand recommendations.
The definitive .300 Blackout guide for suppressed and PDW builds. Compare subsonic vs supersonic loads, find optimal barrel lengths (9" is the sweet spot), match suppressors, and understand true cost of ownership.
Learn proper AR-15 optic mounting with practical steps for eye relief, rail placement, threadlocker application, torque specs, and accessory positioning for repeatable zero.
Rifle Configurator is a free AR-15 builder and gun builder tool designed to help you plan your custom rifle build. Whether you're assembling your first AR-15 build kit or fine-tuning a precision setup, our platform provides real-time compatibility verification across 70+ platforms.
Browse our extensive catalog of AR-15 parts and rifle parts, including uppers, lowers, AR-15 handguards, AR-15 triggers, and barrel assemblies. Our compatibility engine ensures every component you select works together, eliminating guesswork from your custom AR-15 project.
Planning to build your own AR-15? Start with our mission-first configurator that matches components to your intended use case, from home defense to precision shooting.
Compare rifle optics including red dot sights, LPVOs, holographic sights, and rifle scopes. Our guides cover mounting, zeroing, and selecting the best AR-15 optic for your mission profile.
Explore suppressor options, muzzle brakes, flash hiders, and compensators. Learn about silencer compatibility, mounting systems, and the NFA process.
Setup guides for night vision scopes, thermal optics, thermal scopes, and IR laser systems. From PVS-14 mounting to passive aiming configurations.
