Phase 5 Pistol Caliber Buffer Spacer

Pistol Caliber blowback Buffer Spacer for use with 9mm, .40, .357Sig, .45, or 10mm AR style firearms using any standard-length carbine buffer & buffer tube/receiver extension.

- Compatible with carbine buffer tube using any standard-length carbine buffer

- Compatible with rifle length buffer tubes using standard A2 length buffer

- CNC Machined in house from 6061-T6 Aluminum

- Use with a blowback system instead of buying an expensive longer buffer

- Reduces the chance of breaking the bolt catch by limiting the rearward travel of the blowback BCG

- Quickly reversable if you use the same lower receiver with different caliber upper receivers.

Calibers compatible: 9mm / .40 / .357Sig / .45 / 10mm

Compatible with:

*All standard sized carbine AR-15 Buffers (3oz, H1, H2, H3) with carbine length tube

*All standard sized Rifle/A2 AR-15 Buffers with rifle length tube

*A5 Buffers with A5 Buffer tube