Hera USA SFU Bufferless AR Adapter - Side Folding UnitHERA SFU Folding Stock Adapter. Folding stock adapter for use with standard AR-15 / M4 push rods and buffer tubes. Developed for Heras Triarii system, this adapter can also be used on similar systems (not on systems using buffers).
***CANNOT BE USED WITH RECOIL SYSTEM EXTENDING INTO STOCK***
- Material: Aluminum
- Length: 8.3 cm (incl. thread)
- Weight: 5.50 oz
- Colors: Black
- System: M4-style buffer tube