Track exactly what's installed on your custom builds. Install, swap, and remove parts between firearms with a full change history.
Edit any firearm and check the "Custom Build" checkbox. This unlocks the Build tab.
Open the Build tab and add parts from your Parts inventory. Filter by category, search by name, and add multiple parts at once.
Swap parts between builds, remove components, or reassign parts that are already installed on another firearm. Everything is tracked.
Every install, removal, and swap is logged with a timestamp. See exactly what changed and when.
Components are organized by category — upper receiver, barrel, trigger group, BCG, and more. See at a glance what's installed in each slot.
Need a barrel from another rifle? The Builder shows you where each part is installed and lets you reassign it with a single click.
A full timeline of every modification to the build. Know exactly when you swapped that trigger or installed a new barrel.
Tap any installed component to see full details — manufacturer, model, condition, purchase price, and install date.
The Builder pulls directly from your Parts Inventory. Add parts to your inventory first, then install them on builds. Quantities update automatically — you always know what's available and what's installed.
Pro Feature: The Firearm Builder is available with a Pro subscription. Track unlimited builds with full change history and part management.