No for in stock items there will be a red button that says "add to cart" hit that, then when ready hit "go to cart" and the site will walk you through the check out process, including how to pick an ffl ( if an ffl is required, usaully just for guns, in some states ammo as well).
You will need to pick up any regulated items from your selected ffl and submit a background check at the ffl before taking your guns home.
Buds has a whole step by step section with a video included, how to buy a gun online here
budsgunshop.com/howtobuy.php?trk_msg=QQ35K24J5T0KJ4FD3UQGKPOUVK&trk_contact=5VBVJD27MOK9GHKTCVS4M77MPK&trk_module=bna&trk_sid=MVGFMKBF4L835RPBCAQ4H5VUQC&utm_source=listrak&utm_medium=email&utm_term=LEARN+MORE&utm_campaign=BA&utm_content=Page+Browse

Jason, no you do not. Just add the item to your cart and proceed to checkout.

Jason, no Sir. For any in stock item, just place it in your Cart and Checkout. You will be guided through the checkout process and selecting a local FFL Dealer and payment. When the FFL you choose receive your firearm, they will contact you to come in and do the paperwork and pay the transfer fee which averages $30. Once finished, you take your new firearm home. Other than needing a local FFL Dealer to complete, the purchase is the same as any other online purchase. Cheers and stay safe!