Pentax Gameseeker Scope 1.75-5x 20mm Precision Plex Reticle
Gameseeker scopes feature 1-piece tube construction with fully multi-coated optics for a bright, clear picture. The Precision Plex reticle offers simple bullet drop estimation at all ranges. Waterproof, fogproof and shockproof. Covered under the Pentax Worry-Free Warranty
They are priced around $100. I normally use a Weaver 1-3x20mm or a Leupold 1-4 or 1.5-5x20mm but the Weavers are now $150 and the Leupolds are an arm and a leg and I won't pay that. I like the compact 20 mm scopes and thought this one might be worth a try. Read some reviews on them and some say they did have trouble with reticle coming undone. Others say the optics are crisp and clear.
Can't say as I ever saw a Pentax scope around these parts to actually look at one.