From Midwest Industries their Side Folder with the Buffer Tube Adaptor to accommodate different stock attachments! The side folder can be configured to fold left or right.

Features:

• Heavy-duty side-folding mechanism constructed from 4140 steel
• Full-length locking lug for maximum strength
• Solid positive lock up in both positions
• Steel clamp with large surface engagement
• Can be configured to right or left folding
• Modular design can accommodate different stock attachments
• Allows attachment of Mil-Spec buffer tube
• Adds 2.5 inches to firearm length in the open position
• Adds 0.75 inches to firearm length in the folded position
• Complete assembly weight: 8.4 oz.
• Steel parts are mag phosphate finished
• 100% made in the USA