Our mates over at Law Tactical sent some of their new hotness...

AR Internal Carrier (ARIC) - Winner's Choice in C or M Variant

The Law Tactical ARIC (AR Internal Carrier) is a drop in conversion for AR15-type direct impingement firearms that replaces the traditional Bolt Carrier Group, Recoil Spring and Buffer. Firearms equipped with ARIC and Law Tactical Folding Stock Adapters can be fired repeatedly in both the folded and unfolded position, expanding the mission profile of the AR15.

AR Folding Stock Adapter GEN 3-M

Law Tactical's steel adapter enables installation of a folding stock on any AR-15 to create a smaller-profile rifle for easy deployment from a vehicle or transport in non-permissive environments. Works with standard gas impingement OR gas piston system. Accepts A2, mil-spec M4-style, and commercial carbine receiver extension tube and almost any stock that fits them. Compatible with all standard bolt carrier groups, including full-auto and .308 size. Single-button operation for quick folding and unfolding and steel locking latch keeps stock securely in place when extended. Gen3-M has a lowered hinge to avoid interference when charging the weapon, and a setscrew keeps the adapter securely affixed to the receiver. Hinge tension is adjustable so you can choose how stiff the folding mechanism is. Includes special bolt carrier extension (no tools to install/remove). Current version utilizes standard buffer retaining pin and spring. Stock adapters feature a DLC coating.