Gives you additional magazine capacity in only a minute. Quick and simple to install and remove. Threaded tube replaces magazine cap screw. Perfect for Shotgun Action Shooting events or Law Enforcement.
SPECS:
Extension - Steel, blued or parkerized, matte finish. 12 ga. only. Includes extended spring, follower and swivel clamp. Chart indicates number of ROUNDS (RDS) in addition to factory magazine capacity for each model. * 11-87 requires modifications.
Catalog page 190