When the internal set screw is tightened the play is removed and the rail is locked in place; no more having your sight move and losing alignment! Can be removed and reinstalled with good consistency/repeatability. No metal to metal contact or risk of damage. Integrated storage for the allen wrench. 

Hotshoe Weaver/Picatinny mount. 
Fits
 into the camera's flash bracket for mounting a red dot rifle sight.
Eliminates the need to use the viewfinder, great for when you're using a long lens with a narrow field of view. Compatible with most OEM hotshoes (ISO 518:2006, Canon/Nikon/Etc).
$35.00

 

Optional Thumbscrew: Stainless Steel. Replaces the set screw and allen key. $3.00

   

Holographic Red Dot Sight: Selectable between four different reticles, three levels of brightness, two colors (red/green). Eliminates the need to use the viewfinder, great for long lenses with a narrow field of view. Requires the Red Dot Rail. (imported) $45.00

 

FlipSight Red Dot Sight: Smaller and lighter holographic red dot sight. Auto power on/off with screen position. Backup iron sights. Requires red dot rail. (imported) $50

TEMPORARILY OUT OF STOCK