# US 2014/0360074 A1 · Buttstock assembly > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0360074 A1 - Document ID: US20140360074A1 - Status: Published application - Kind: A1 - Application number: 14/466,328 - Filed: 2014-08-22 - Published: 2014-12-11 - Earliest claimed: 2012-08-27 - Assignees: RA Brands, L.L.C. - Applicants: Ra Brands, L.L.C. - Inventors: M. Brent Jarboe - Web page: https://patentgrep.com/patent/US20140360074A1 ## CPC - F41C 23/14: Adjustable stock or stock parts, i.e. adaptable to personal requirements, e.g. length, pitch, cast or drop - F41C 23/04: Folding or telescopic stocks or stock parts (articulated or collapsible guns F41A11/04) - F41C 23/06: Stocks {or firearm frames} specially adapted for recoil reduction - F41C 23/08: Recoil absorbing pads - F41C: SMALLARMS, e.g. PISTOLS, RIFLES (functional features or details common to both smallarms and ordnance, mountings therefor F41A; projecting missiles without use of explosive or combustible propellant charge F41B); ACCESSORIES THEREFOR ## Abstract A modular firearm comprising an adjustable modular buttstock assembly. The buttstock assembly can include a frame with a central opening. A comb assembly having a cheek piece and a butt plate assembly having a recoil pad each can be mounted to the frame by an adjustment apparatus. Each adjustment apparatus can include of a guide post and/or a threaded adjustment post each received in respective bores in the frame to adjust the positions of the cheek piece and recoil pad. The adjustment apparatus also can include a locking or engagement feature that can selectively increase the friction between the frame and the guide post and/or adjustment post, to help prevent the translation of the guide post and/or adjustment post in the bore in the frame to fix the comb assembly and butt plate assembly in desired positions with respect to the frame. ## Claims ### Claim 1 A firearm, comprising: a receiver; a barrel; a fire control; and an adjustable buttstock assembly mounted to the receiver, comprising: a skeletonized frame defining an open area, an adjustment apparatus engaging the frame and a comb assembly or a butt plate assembly mounted to the frame by the adjustment apparatus, wherein the adjustment apparatus includes a lock mechanism for securing the comb assembly or the butt plate assembly in a desired position. ### Claim 2 (depends on 1) The firearm of claim 1, wherein the skeletonized frame comprises a substantially unitary body extending about and defining the open area. ### Claim 3 (depends on 1) The firearm of claim 1, and further comprising a hinge pivotally connecting the adjustable buttstock assembly to the receiver to enable movement of the buttstock assembly with respect to the receiver. ### Claim 4 (depends on 1) The firearm of claim 1, wherein the lock mechanism is removably mountable along either side of the frame. ### Claim 5 (depends on 1) The firearm of claim 1, further comprising a bracket mounted within the open area defined by the frame for attachment of one or more accessories to the buttstock assembly. ### Claim 6 (depends on 5) The firearm of claim 5, wherein the bracket comprises a T-bracket received within the open area and mountable to the frame by a fastener. ### Claim 7 (depends on 1) The firearm of claim 1, and further comprising at least one rail platform mounted to the frame. ### Claim 8 (depends on 1) The firearm of claim 1, wherein the adjustment apparatus comprises an adjustment post received through a bore formed within the frame and moveable through the bore of the frame for adjusting the position of the comb assembly or the butt plate assembly with respect to the frame. ### Claim 9 (depends on 8) The firearm of claim 8, further comprising a separation channel formed adjacent the bore through which the adjustment post is received, and wherein the lock mechanism of the adjustment apparatus comprises a clamping mechanism mounted along the frame adjacent each separation channel, wherein upon actuation of the clamping mechanism, the frame is urged into frictional engagement with the adjustment post. ### Claim 10 (depends on 9) The firearm of claim 9, wherein the adjustment apparatus further comprises a guide post attached to the comb assembly or the butt plate assembly, the guide post received through an additional bore formed through the frame, and wherein as the clamping mechanism is actuated, the frame is urged into frictional engagement with the guide post. ### Claim 11 (depends on 9) The firearm of claim 9, wherein the clamping mechanism comprises a pair of clamp plates mounted on opposite sides of the separation channel and an adjustable fastener extending through the clamp plates and the frame, wherein the fastener is engaged to draw the clamp plates together, closing the separation channel such that the frame is brought into engaging contact with the at least one adjustment apparatus. ### Claim 12 An adjustable buttstock assembly for a firearm, comprising: a skeletonized frame defining an open space therewithin; a comb assembly or a recoil pad assembly mounted along the frame; and an adjustment apparatus for adjustment of a position of the comb assembly or the recoil pad assembly with respect to the frame, the adjustment apparatus comprising a post received within and moveable through a bore formed in the frame and a lock mechanism operable to urge the frame into engagement with the post to lock the post in a desired position with respect to the frame. ### Claim 13 (depends on 12) The adjustable buttstock assembly of claim 12, wherein the lock mechanism of the adjustment apparatus comprises a screw clamp or a screw fastener. ### Claim 14 (depends on 12) The adjustable buttstock assembly of claim 12, wherein the adjustment apparatus comprises a first adjustment apparatus connected to the comb assembly for adjusting a position of the comb assembly with respect to the frame, and the adjustable buttstock assembly comprises a second adjustment apparatus connected to the recoil pad for adjusting a position of the recoil pad with respect to the frame, wherein the post is a first post of the first adjustment apparatus and the bore is a first bore formed in the frame, and the second adjustment apparatus comprises a second post received within and moveable through a second bore formed in the frame. ### Claim 15 (depends on 14) The adjustable buttstock assembly of claim 14, further comprising a separation channel formed adjacent each of the first and second bores through which the respective first and second posts are received, wherein the lock mechanism is a first lock mechanism of the first adjustment apparatus, the second adjustment apparatus comprises a second lock mechanism, and each of the first and second lock mechanisms comprises a clamping mechanism mounted along the frame adjacent the respective separation channel, wherein upon actuation of each clamping mechanism the frame is urged into frictional engagement with the respective first and second posts of the respective first and second adjustment apparatus. ### Claim 16 (depends on 12) The adjustable buttstock assembly of claim 12, wherein the post comprises an adjustment post and the bore comprises a first bore formed in the frame, and the adjustment apparatus further comprises a guide post received within and moveable through a second bore formed in the frame. ### Claim 17 (depends on 16) The adjustable buttstock assembly of claim 16, wherein the adjustment apparatus further comprises an adjustment wheel mounted along the adjustment post and rotatable so as to enable a user to move the adjustment post through the first bore. ### Claim 18 (depends on 16) The adjustable buttstock assembly of claim 16, further comprising a separation channel formed adjacent and in communication with the first and second bores through which the respective adjustment post and guide post are received, wherein the lock mechanism comprises a clamping mechanism mounted along the frame adjacent the separation channel, and wherein upon actuation of the clamping mechanism, the frame is urged into frictional engagement with at least one of the adjustment post or the guide post of the adjustment apparatus. ### Claim 19 (depends on 12) The adjustable buttstock assembly of claim 12, further comprising at least one rail platform mounted to the frame. ### Claim 20 (depends on 12) The adjustable buttstock assembly of claim 12, and further comprising a bracket mountable within the open space defined by the frame for attaching an accessory to the frame. ### Claim 21 (depends on 12) The adjustable buttstock assembly of claim 12, wherein the lock mechanism of the adjustment apparatus can be removed and mounted on an opposite side of the frame to enable ambidextrous operation thereof. ### Claim 22 (depends on 12) The adjustable buttstock assembly of claim 12, wherein the lock mechanism of the adjustment apparatus comprises a pair of clamp plates mounted on opposite sides of a separation channel formed along the frame adjacent the adjustment apparatus and in communication with the bore formed in the frame, and an adjustable fastener extending through the clamp plates and the frame, wherein the fastener is engaged to draw the clamp plates together, closing the separation channel such that the frame is brought into engaging contact with the post of the adjustment apparatus. ### Claim 23 (depends on 12) The adjustable buttstock assembly of claim 12, wherein the recoil pad assembly comprises a guide plate connected to the frame by the post of the adjustment apparatus and a recoil pad moveably positioned along the guide plate, wherein the guide plate is adjustable in a first direction with respect to the frame and the recoil pad is adjustable in a second direction with respect to the guide plate. ### Claim 24 (depends on 23) The adjustable buttstock assembly of claim 23, further comprising a base attached to the recoil pad, and a detent mechanism mounted along the guide plate and having an engaging member moveable between a non-engaging position and an engaging position for engaging one of a plurality of notches formed along the base to enable selective adjustment of the recoil pad in the second direction.