CSS Catamount 12 MID Reliability Kit

Catamount 12's out of the box will normally shoot Buck Shot, Slugs and High Brass Bird Shot, but sometimes not all Low Brass ammo.

This kit will help you run all 2 3/4" ammo from Slugs/Buck Shot to the low brass Walmart "100rd Value Pack" Remington and Federal birdshot.
We recommend you do not use a 1 oz birdshot load or Winchester "Universal" ammo if you are having cycling issues.

The Kit includes
1-CSS 4 Position adjustable Gas Knob.
1- CSS Peformance Recoil Spring designed for all 2 3/4" shells
1- CSS Gas Puc is engineered to keep your gas system working in optimum performance

The combination of these 3 parts will help your gas system run ALL 2 3/4" shells unless you have improperly drilled gas ports.

Installation Instructions
1. Make sure firearm is unloaded.
2. Remove top cover from the firearm and pull out the recoil spring assembly.
3. Remove the springs and dustcover from the guiderod
4. Using a heavy set punch, remove the pin holding the guiderod to the guiderod holder
5. Install the JTE Guiderod by driving in the pin (minor fitment required - boring out the guiderod holder)
6. Install a Full Power Spring in the Rear and either a Full Power Spring (for heavy loads) or a Performance Spring (for Target loads) in the front.
7. Completely unscrew the factory gas plug regulator knob out of the gas block.

-Now is a great time to clean the gas block free of carbon build up and debris.
Also take a pic and make sure the gas ports are open inside the gas block.

8. Now install the new gas adjustment knob.

SETTING GUIDE FOR GAS PLUG
The lower the number, the less gas it allows into the system.
Setting #1: is normally used for all 3 inch shells and some heavy 2 3/4 inch.
Setting #2: is normally used for all heavy 2 3/4 inch buck shot slugs.
Setting #3: is normally used for 2 3/4 inch high brass bird shot hunting loads.
Setting #4: allows the most gas into the system and is normally used for the low brass shells.
These settings may vary depending on the ammo and the firearms.

All parts are US made.

Works on only on CATAMOUNT 12 shotguns.