Expo Arms Carbine Buffer

I was building a parts gun recently and I wanted to keep the build fairly cheap, so I grabbed an Expo Arms buffer spring and buffer weight. Not too expensive, and they were from Primary Arms, so no worries I thought.

I take the buffer weight out of the bag and it is covered in a gritty phosphate coating. And I mean GRITTY. It feels like it should not be an internal part.

So, of course I slap it in and cycle the gun a few times because why not? When I was pressing the buffer spring over the base of the weight, it took a really hard push, as the spring didn't want to go over the lip of the buffer.

It didn't want go in the buffer tube either, but hey. I'm here to test it out so you don't have to. Hand cycle a few times, it feels gritty and ratchety but I figure that will iron out with some use.

On to the range and I'm sighting in my new rifle and the gun is short stroking like crazy. It's a single shot. I'm shooting Tula, but all my guns run it with no issues so I figure why not.

After a dozen single shots, I take out the BCG, check it, then pop out the buffer and spring.

The buffer is covered in marks and scratches from the spring. It was dragging and threw off the cycling of the gun. I put a Spikes H2 buffer in from another gun and the rifle runs great.

Stay away from the Expo Arms buffers. Don't get sucked in by the price, these are hot garbage.

Stay accurate.