초록 ▼

An improved Rail Adaptor System/Rail Accessory System (RAS) which attaches to a firearm. The rail is top opening, modular, and free floats the barrel. Provided is a rigid, lightweight, strong platform for mounting firearm accessories. Heat transmission from the barrel assembly to the user is limited

An improved Rail Adaptor System/Rail Accessory System (RAS) which attaches to a firearm. The rail is top opening, modular, and free floats the barrel. Provided is a rigid, lightweight, strong platform for mounting firearm accessories. Heat transmission from the barrel assembly to the user is limited. The user is also protected from ventilated gases originating from the operating system. A quick detachable top rail section is provided so that the gas system may be easily accessed. This removable top section of the rail is what makes this device unique because the RAS may be installed without removing the barrel, gas system, front sight base, flash hider or the barrel nut. The herein described RAS is adaptable to a wide variety of firearms with the use of conversion parts. The top tail “returns to zero” on reinstallation allowing the remounting of various optics and electronic gun sites without the need to realign them.

대표청구항 ▼

1. A top opening, modular top rail, multi-rifle adaptable free float rail accessory system in combination with a firearm comprising: a firearm having a gas piston operating system, a receiver, a barrel, and a barrel nut including a cylindrical portion terminating at a forwardly directed end with a r

1. A top opening, modular top rail, multi-rifle adaptable free float rail accessory system in combination with a firearm comprising: a firearm having a gas piston operating system, a receiver, a barrel, and a barrel nut including a cylindrical portion terminating at a forwardly directed end with a radially outwardly directed flange, the barrel nut coupling the barrel to the receiver;a free float rail accessory system having a bottom portion with a forward end and a rearward end, an inner surface of said bottom portion having a groove formed therein, perpendicular to a longitudinal axis of said bottom portion and spaced from the rearward end, the groove receiving the flange of the barrel nut to align the bottom portion with the receiver and to prevent longitudinal movement of said bottom portion;a clamp assembly engaging a top part of the barrel nut and configured to attach to the rearward end of the bottom portion, the clamp assembly including a clamp element having a central semicircular recess receiving the cylindrical portion of the barrel nut, and a surface which is constructed to abut the radially outwardly directed flange of the barrel nut;an anti-rotational device having an inner surface configured to receive said barrel nut, two rearwardly directed flanges on opposite sides of the firearm receiver, and a front edge, said front edge abutting the flanged end of said barrel nut when the clamp assembly is secured to the rearward end of the bottom portion, said flanges preventing rotational movement of the free float rail accessory system;a top portion having a top section and opposing side sections extending therefrom and each terminating at an edge, the top portion and the bottom portion encircling the barrel when coupled together, said top portion being removably coupled to the bottom portion; anda manually installed component oriented to extend parallel with a longitudinal axis of said bottom portion, said component configured to removably secure and unsecure said top portion to said bottom portion when manually manipulated by a user without the use of a tool. 2. The combination as set forth in claim 1 wherein said component for securing the top portion to the bottom portion includes a plurality of screws with o-rings placed between heads of said screws and the forward end of the bottom portion to facilitate manual tightening of the screws and prevent unintentional backing out of the screws. 3. The combination as set forth in claim 1, wherein said component includes a plurality of pusher screws received within receptacles formed in said front face. 4. The combination as set forth in claim 3, further comprising o-rings placed between heads of said screws and the forward face to facilitate manual tightening of the screws and prevent unintentional backing out of the screws. 5. The combination as set forth in claim 4, wherein said pusher screws have textured heads. 6. The combination as set forth in claim 5, wherein said top portion includes receptacles for receiving tip portions of said pusher screws, said pusher screw tips thereby being seated against said top portion when tightened to secure the top portion to the bottom portion.