6-position Receiver Extension Tube with Mil-spec diameter for AR15 Rifles.

Machined from 6061/T6 Aircraft Grade Aluminum

Finished in a Matte Black Type III Class II hard coat anodize.

Tightest Tolerance Control for Zero-gap Fit with Polymer Stock and Receiver

Made in USA

Finish: Black

Material: Aluminum

Height: 1.45:

Length: 7.25"

Weight: 4 oz