Aim Sports ARPTUB Pistol Buffer Tube w/Pad Black Aluminum - AR-15

The Aim Sports ARPTUB Pistol Buffer Tube is a purpose-built component for the AR-15 platform, designed to complete an AR pistol or any buffer-tube-equipped AR-15 build. Machined from aluminum and finished in black, this tube provides a lightweight, durable mounting point that threads onto a standard AR-15 lower receiver castle nut. A rear pad ships pre-installed for immediate shoulder contact and improved comfort on pistol-configured builds.

Drop-in and ready to install, the ARPTUB accepts the appropriate buffer and spring for AR pistol applications, making it a practical choice for finishing a custom AR pistol, replacing a worn component, or keeping a spare on the bench. Its straightforward, no-frills design keeps weight to a minimum while delivering the strength needed for reliable cycling on everyday setups.