ARMORY RESOURCE CENTER
Access exploded gun diagrams, torque specification charts, ballistic calculators, and our nationwide FFL transfer directory.
Gun Schematics & Exploded Views
Interactive exploded diagrams for over 1,500 firearms. Click on any part in the schematic to immediately check live armory stock and add it to your cart.
Ballistic & Reloading Calculator
Calculate trajectory drop, windage drift, kinetic energy, and recoil velocity for match-grade rifle cartridges and custom handloads.
Nationwide FFL Transfer Directory
Search over 12,000 pre-approved Federal Firearms Licensees across all 50 states for seamless, hassle-free online firearm transfers.
AR-15 / AR-10 TORQUE SPECIFICATION CHART
Always use a quality torque wrench and proper grease/threadlocker when assembling upper and lower receivers.
| COMPONENT / PART | RECOMMENDED TORQUE SPEC | THREAD COMPOUND / NOTES |
|---|---|---|
| Barrel Nut (Standard Mil-Spec) | 30 - 80 ft-lbs | AeroShell 33MS / MS28654 Grease. Align gas tube hole. |
| Castle Nut (Receiver Extension) | 38 - 42 ft-lbs | Stake end plate into castle nut notches in 2 places. |
| Muzzle Device / Flash Hider | 15 - 20 ft-lbs | Use crush washer or peel washer. Do not overtorque suppressors. |
| Gas Key Screws (Carrier) | 50 - 58 in-lbs | Permatex High-Temp Threadlocker & properly stake bolt carrier. |
Downloadable Armory Reference Guides
Official technical manuals, torque specification sheets, and armor sizing guides available for offline field reference.
AR-15 Complete Assembly & Armorer's Manual
Comprehensive 112-page manual detailing receiver staking, headspace verification, and gas port sizing.
Long-Range Ballistics & Reticle Holdover Chart
Reference tables for .338 Lapua, 6.5 Creedmoor, and .308 Win trajectory drop out to 1,500 meters.
NIJ Body Armor Threat Level & Sizing Guide
Learn how to measure torso vitals for 10x12 vs 11x14 plates and understand Level III+ vs IV ratings.
NFA Suppressor Maintenance & Cleaning Handbook
Instructions for ultrasonic cleaning titanium and Inconel baffles without damaging protective finishes.