AR-15 Caliber Comparison Chart: Every Chambering Ranked
Every AR-15 caliber compared in one chart. Velocity, range, ammo cost, magazine compatibility, and best use case for .223, 300 BLK, 6.5 Grendel, and more.
AR-15
AR-15 Legal States: Where You Can Own One (2026)
Which states allow AR-15 ownership in 2026, which have feature restrictions or assault weapon bans, and how to comply with featureless and fixed-mag workarounds.
AR-15 Parts List: Every Component Explained
Complete AR-15 parts list with every component explained, price ranges at budget through premium tiers, and where to spend vs save on your build.
AR-15 Magazine Capacity Laws by State (2026)
Complete state-by-state guide to AR-15 magazine capacity laws in 2026. Which states restrict magazine size, grandfathering rules, penalties, and travel tips.
AR-15 Home Defense Setup: Complete Build Guide
How to set up an AR-15 for home defense. Barrel length, caliber choice, weapon light picks, optic selection, ammo recommendations, and storage solutions.
AR-15 Twist Rate Explained: How to Choose
AR-15 twist rates from 1:7 to 1:9 compared. Which bullet weights each stabilizes, the most versatile option, and how to check your barrel’s twist rate.
AR-15 Gas System Length Explained
Pistol, carbine, mid-length, and rifle gas systems compared with dwell time data, barrel length pairings, and troubleshooting for over-gassing and under-gassing.
Mil-Spec vs Commercial AR-15: What’s the Difference?
What mil-spec actually means for AR-15 parts, when it matters for compatibility, and when aftermarket parts deliberately exceed military specifications.
AR-15 Buffer Weight Guide: How to Choose the Right One
Carbine, H, H2, H3 buffers explained with a complete weight chart, gas system pairing recommendations, and troubleshooting for short-stroking and over-gassing.