For AR Pistol Buffer tubes (outer diameter OD of 1.25" - standard size).
This is a clamp-on fin which tightens securely onto the tube via screws and metal inserts. No need for a stop-pin/screw or special buffer tube.
Choice of 3 buying options:
Stabilizer Fin (image #2)
Stabilizer Fin + Pistol Buffer Tube (image #3)
Fin, pistol buffer tube
Stabilizer Fin + Pistol Buffer Tube KIT (image #4)
Fin, pistol buffer tube, recoil spring, recoil buffer, castle nut, receiver end plate
Fin is not suitable for Mil-Spec, Commercial or A2 Rifle buffer tubes.
-Only works with round tubes that have an outer diameter of 1.25".