Browning Extended Invector Double Seal Choke Tubes have a new double seal technology that keeps the gas and grit from shot shells out of the choke tube threads. The brass alloy band at the bottom of the choke tube is what seals out the grit. The Browning Extended Invector Choke tubes keeps the patterns evenly spaced between the chokes. Since the grit stays out from behind the choke tube, you can more easily remove the choke tube after shooting. Longer choke tubes lengthen the taper of the tube, and thus improve velocity, pattern density and percentages.
The Extended version makes for easier removal and tighter patterns. The integrated spring suspension keeps the seal tight but also allows expansion.
Browning Extended Invector Double Seal Choke Tubes Feature:
- Double seal technology
- Keeps choke tube threads clean
- Keeps patterns evenly spaced
- Improves velocity, pattern density and percentages
- Easier removal and tighter patterns