Gun parts and accessories take longer to index than most item as they go through more rigorous review.
It can take 24 hours for a listing to index in search. If you revise the listing the clock may restart.
While longer index times are most common for new sellers, even well-established sellers that typically experience near instant indexing can see the longer indexing time depending what they're listing from item, to category, to key words, to price.
https://www.ebay.com/help/selling/listings/listing-tips/finding-listing?id=4162
When you create a listing, your item should appear in eBay searches within 24 hours. To find it, search using keywords in your listing, and apply filters to narrow your results.
If you can’t find your listing after 24 hours, go to Selling and check whether it’s active, in draft, or has any other status. The listing needs to be active to be pulled into our search results.
If your listing is active, and it’s been 24 hours, here are some quick checks you can do:
- Make sure you didn’t misspell anything or run two words together in the item’s title
- Look for any typos that accidentally created profanity in your listing; search will block a listing if it spots profanity
- Remove any special characters (! @ / *) from the title
- Check if you’ve created a duplicate listing. If you have, you’ll find a note in the Selling section of My eBay or Seller Hub explaining that your listing won’t be available until you’ve received at least one bid on the identical active listing
- Make sure it’s okay to sell that type of product on eBay. If the item is from a category that’s not allowed, we’ll remove your listing and send you an email explaining why Learn more about prohibited or restricted items