Anyone used the Killjoy and/or Tiberius adjustable paintball risers for airgun?

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http://www.shop4paintball.com/Killjoy_Industries_Adjustable_Picatinny_Rail_APR_2_p/05kljyapr2.htm

Features

• Precision Machined Adjustable Picatinny Rail (APR)
• Anodized Flat Black
• FAST One Handed Adjustability From 0 - 5 Degrees
• Laser engraved adjustment markings for increased visibility on the field
• Two Piece Clamp On Style Mount
• The "ORIGINAL" Adjustable Sight Riser Designed SPECIFICALLY FOR PAINTBALL!!!!
• MIL-STD-1913 picatinny rail.
• Picatinny rail length 4 inches.
• Raises the base of your scope or red dot 1.5 inches.
• Weight 8 oz .

http://www.hustlepaintball.com/Tiberius-Arms-First-Strike-Ready-FSR-Adjustable-Riser-Weaver-Picatinny-New-StyleFeatures:

• 18 vertical adjustments
• Universal rail mount
• Ambidextrous adjustment knobs
• Solid aluminum construction

You get 9 degrees of adjustment with multiple adjustment points to fine tune your range