John, this is exactly the case. Buds uses a large network of distributors to acquire firearms for it's over 2 million customer base. Although large, Buds has also been impacted by high demand and low manufacturer supply as well. Also a tip I use is setting up Buds notification email (BudsGunShop.com) to send a hi priority text to your phone when items come back in stock. There usually are hundreds if not more folks getting the same email and this will give you an edge on acquiring firearms/items on a first come, first get, scenario. Cheers and stay safe!

They've just been at it for a long time, and built good relationships with their customers and suppliers.
"Why buy from Buds?
Bud's has a 19 year proven track record as the #1 online firearms retailer. During this time we have continuously maintained an A+ rating with the Better Business Bureau. We have over 64,000 FFL dealers nationwide who have agreed to accept firearm transfers from Buds, over 15,000 of which have chosen to be a Buds Preferred Dealer. To search for a transferring dealer in your local area, simply enter your zip code here.
We are known for having the largest selection of firearms, at the lowest prices, of any online retailer in the nation. We offer several convenient payment options to choose from, including: Credit Card, ACH (bank transfer), Financing, Layaway plans and more. We make the experience of buying a firearm, ammunition, and accessories online both convenient and enjoyable. For our customers additional confidence and security we offer, at no additional charge, the Norton Shopping Guarantee which is a 3-in-1 guarantee on each purchase offering up to $10,000 in maximum coverage.
These are just a few of the reasons that answer the question "Why buy from Buds?". We are confident you will experience many other reasons if you will honor us with your business."