Specifications and Features:
Extends beyond end of barrel for easy removal and even tighter patterns
Proprietary differential banded gas seal eliminates residue build up and makes chokes easy to remove and install
Integrated spring suspension holds the seal tight, yet allows expansion against the barrel wall for a perfect fit and a smooth transition for shot column entering choke
Gas is controlled at the interface between choke and where it seats in the bore
From skeet to full choke, patterns tighten consistently and reliably

Fits Invector DS specific models only. Not interchangable with normal Invector/Invector Plus systems.