Patent ID: 8353125

Claim:
A mounting apparatus for adjustably mounting and positioning a device to a rail interface of a firearm, the mounting apparatus comprising: a base assembly comprising a base, a first securing means for releasably securing the mounting apparatus to the rail interface of the firearm, and a base support surface oppositely-disposed on the base relative to the first securing means; a ring assembly configured to surround and grip the device, the ring assembly comprising first and second ring segments, a second securing means for releasably securing the ring assembly to the base, and a third securing means for releasably securing the first and second ring segments together and gripping the device therebetween, each of the first and second ring segments having a cradle surface configured to engage the device, the first ring segment having a ring support surface oppositely-disposed relative to the cradle surface thereof, the ring support surface having a shape complementary to the base support surface of the base; and at least two spacer members configured to be disposed between the base and the ring assembly and secured therebetween with the second securing means, each of the spacer members having first and second support surfaces oppositely-disposed relative to each other, the first support surfaces having a shape complementary to the base support surface of the base, the second support surfaces having a shape complementary to the ring support surface of the first ring segment.