Battl Builders
Part breakdowns, buying advice, and build walkthroughs to help you make smarter decisions before you spend a dollar.
Lower, upper, barrel, handguard, BCG — there are a lot of parts in an AR-15 build. This guide breaks down every slot in the Battl Builder and explains exactly what each part does and why it matters.
Read guide →Should you buy a complete upper or source every component separately? Both paths get you to the same rifle — but the right choice depends on your budget, timeline, and how much you actually want to wrench.
Read guide →Ready to start building? Open the Builder →