Is this a pistol length buffer — 1 Answer

I am not aware of any "pistol length buffers". However, if you are asking if it will work with a "pistol length barrel", then yes, absolutely. Assuming you have a carbine length buffer tube and spring. If you are using a "pistol" buffer tube that is carbine length, yes it will work. If you are using a pistol buffer tube say an inch shorter, an AR10 buffer in the 5.4oz flavor should work. If you are using a "shorty" pistol buffer tube 3.5" inches or less, definitely not. Those require proprietary buffer weights in very limited sizes/weights. Without being certain what buffer tube you have I cannot provide a definitive yes/no answer.