About AR15 Lower Lab
AR15 Lower Lab is an online shop for serialized AR-15 lower receivers and the parts that build them. No showroom: a live catalogue with fitment stated, guides that follow the build in order, and a checkout that knows a lower is a firearm and a parts kit is not.
We are a dealer, not a manufacturer, and brand names on the site say only what we stock. Lowers and complete rifles ship to the licensed dealer you name, who completes ATF Form 4473 and the background check before releasing them; parts ship to your address where state law allows. Every receiver we sell is finished and serialized. Unfinished receivers, receiver blanks, the tooling to finish them and short-barrelled rifles are not sold. We also keep city guides for 20 cities, with who issues carry licenses, the hunting zone and the nearest public ranges.
How we work
- Online only. There's no showroom to visit. Everything is ordered here and picked up at your own FFL dealer.
- Live price and stock. What you see is checked again when you order.
- Every firearm through an FFL. We ship guns only to licensed dealers, who complete the background check with you.
- Straight answers. Ask us anything before you buy — about a model, a caliber, or how a transfer works.
What we don't sell
We don't sell NFA items (suppressors, short-barreled rifles or shotguns, machine guns), and we don't ship items to places where they're prohibited.
Last updated September 2026.