Ultimate 500

{{Infobox weapon

| name = Ultimate 500

| image = Ultimate 500.jpg

| image_size = 300

| caption=

| origin = United States

| type = Revolver

| is_ranged = yes

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| designer = Gary Reeder

| design_date =

| manufacturer = Gary Reeder Custom Guns

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| weight = 50 oz (1.417 kg)

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| length = 14.5 in (36.83 cm)

| part_length = 8.5 in (21.59cm)

| crew =

| cartridge = .500 S&W Magnum

| action = Single action

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| feed = 5-shot cylinder

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Ultimate 500 is a 5-shot single-action revolver chambered for the .500 S&W cartridge, manufactured by Gary Reeder Custom Guns.{{Cite web |title=Gary Reeder's ultimate .500: a gun too far, at least for some. - Free Online Library |url=https://www.thefreelibrary.com/Gary+Reeder%27s+ultimate+.500:+a+gun+too+far,+at+least+for+some.-a0109945153 |access-date=2023-01-28 |website=www.thefreelibrary.com}}

The revolver has an 8.5-inch barrel.