AR-15 Build Planner • Free to use

# Stop Guessing. Start Building.

Pick parts by role, catch compatibility issues before you order, and compare live retailer prices — all without a spreadsheet.

Start a Build → No account required · Free to use
How it works

## Three steps from idea to order

1

### Pick your parts

Choose from real parts organized by role — barrel, lower, upper, and more. No part numbers required.

2

### Check compatibility

Catch mismatches before you order. Gas system, buffer weight, caliber — flagged automatically.

3

### Compare prices & buy

See live prices from real retailers. Click through to buy — we never touch your order.

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Builder preview — looping screen recording

What's included

## Everything you need to plan a build

No fluff. No upsells. Just the tools to plan your AR-15 right.

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### Guided part roles

Pick parts by role so you're never guessing what fits where.

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### Compatibility warnings

Catch obvious mismatches — gas system, buffer, caliber — before you buy.

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### Live pricing totals

Running total as you build, with real retailer listings updated regularly.

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### Save your builds

Create a free account to save builds and pick up where you left off.

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### Shareable build links

Share a build URL with your buddy or your gunsmith. No login needed to view.

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### No account to browse

Explore parts and build freely. Create an account only when you're ready to save.

## What is Battl Builders?

Battl Builders is a free AR-15 build planner that helps you select compatible parts, compare prices across retailers, and plan your build from start to finish — without juggling spreadsheets or browser tabs.

Unlike a generic parts list, Battl Builders understands AR-15 compatibility rules: gas system length vs. barrel length, buffer weight vs. stock type, caliber consistency across upper and lower. You get warnings when something doesn't match before you spend money on the wrong part.

Whether you're planning your first build or your tenth, Battl Builders gives you a structured, guided way to research parts and buy with confidence.

## Ready to build?

It's free, no account required, and takes about 5 minutes to start.

Start a Build →
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