The HS507C-V2 Micro Red Dot System from Holosun is a pistol-sized optic with an open frame for a great sight picture, clear glass and a rugged 7075 aluminum housing. It is powered by a CR2032 battery and Holosunâ??s innovative Solar Fail-safe back up. The HS507C will run up to 10 years on a single battery on setting 6, dot only. Featuring a Multi-reticle system, the HS507C allows the operator to switch the reticle between a 32 MOA circle with 2 MOA dot, a 2 MOA dot only, or a 32 MOA ring only, all at the push of a button. Better yet, the same LED projects all three reticles, so no re-zeroing is necessary. It comes equipped with Holosun's Shake Awake technology with last setting recall. This optic has all the features you want in one tough, small package.
Specifications:

Magnification	1x
Objective	20mm
Field of View	Unlimited
Eye Relief	Unlimited
Dot Size	2 MOA Dot/ 65 MOA Circle
Tube Diameter	20 MM
Length	2.73"
Weight	3.74 oz
Finish	Black Anodized
Battery	CR2032
Reticle	2 MOA Red Dot/65 MOA Red Circle Multi Reticle
Adjustment Size	0.50 MOA
Proofs	IP67 Waterproof
Optic Coating	Multi-Coated
Windage Elevation	Adjustable