Shadow 2 Pro-Package Installation Instructions
Manual Safety Hammer & Adjustable Sear Installation
These instructions cover the installation and set-up of the Race Hammer Kit or any of our hammer kits that use our adjustable sear. Sear set screw adjustment is simple and straightforward, consequently these instructions must be adhered to when adjusting the sear set screw. Please read these instructions thoroughly.
Important Information on your Manual Safety and the CGW Hammer Kit
Once your installation is complete, your manual safety will operate differently with the new high-performance CGW parts. All high-performance hammers retime the action by changing the sear geometry. Once all parts and springs are installed, your manual safety will operate as follows:
- With the hammer down, the manual safety can be applied “up”
- With the hammer at half-cock, the manual safety can be applied “up”
- With the hammer at full-cock, the manual safety can be applied “up”, but the hammer cannot fall with a firm squeeze of the trigger
Please note the only time the manual safety should be applied regardless of what parts are being used, is when the hammer is at full cock. The manual safety function cannot be changed or altered when using a performance hammer. The manual safety should only be applied “up” or on when the pistol is fully cocked in the single-action mode. Never apply the safety up with the hammer fully lowered. Do not attempt to use the DA with the manual safety applied in the “up” or on position.
- The sear does not adjust the trigger pull in any way; it simply cannot. The sole purpose of the adjustable sear is to restore proper function of the manual safety when a performance hammer is installed.
- Before you install the CGW sear, thoroughly degrease the sear and set screw threads. Acetone works best for this. It is very important the threads be clean and dry. Leave the adjustment set screw out of the sear for now.
- Install the degreased adjustable sear into your sear cage. Be certain your sear cage is fully assembled before installation into the frame.
- Install the hammer assembly into the frame first, followed by the sear cage. Install the adjustment set screw. NOTE: proper adjustment of the set screw can only be accomplished with the hammer spring installed and the hammer spring plug in place, so normal hammer spring tension is applied to the hammer. This is critical for proper final setting of the set screw.
- The sear set screw is extremely simple and easy to properly set; it can only be adjusted one way.
- Sear screw adjustment consists of cocking the pistol in SA, applying the manual safety in the fully “up”, or safety on position, then turn the hardened adjustment screw in until slight contact with the manual safety pad is achieved. It’s just that simple. The set screw should make slight contact with the manual safety pad when done properly. Check for smooth, consistent upward movement of the manual safety. Do not back the set screw out once slight contact is made with the manual safety pad.
- Check to make sure the hammer will not fall with the safety in the “up” or on position when the hammer is fully cocked. Click the safety off; ensure the hammer will fall with no interference. There should be smooth movement of the manual safety to the safety “up” or on position.
- Once you are familiar with the proper adjustment “feel”, remove the adjustment screw, and apply a very small amount of “Red” Loctite to the adjustment set screw. Allow the Loctite to “wick” into the threads, but do not apply more Loctite than is needed. Make sure your Loctite is fresh for best results. Now perform the final adjustment as outlined previously. Once properly set, the sear will never require further adjustment and will be reliable and trouble-free for the life of the firearm.
- Allow at least sufficient time for the Loctite to cure, keeping any oil away from the set screw. Lightly oil the sear and sear cage unit as you normally would once the Loctite has fully cured.
Reach Reduction Kit Installation
- If you are not familiar with the procedures to disassemble and reassemble your CZ pistol, it is recommended you find a competent local gunsmith. You can also send your CZ to CGW for installation if necessary. Disassembly help can be found on the CGW website home page, see the
- “TUTORIALS” for dis- and reassembly of your CZ.
- Before installation, ensure the pistol is unloaded. Always point the muzzle in a safe direction.
- Remove the magazine and slide assembly, remove the sear cage, remove the hammer assembly, remove the original disconnector and install the special CGW disconnector. Leave the hammer out for now until the trigger bar assembly is removed and reinstalled.
- Remove the OEM trigger pivot pin using the CGW starter punch #SP, remove the trigger bar assembly, replace the original trigger with the CGW trigger. Use a steel slave pin (one is included in the CGW TR PIN kit) to retain the trigger return spring. Replace the OEM trigger pin with a CGW floating tool steel trigger pin, part number TRPIN as a replacement. BOTH THREADED HOLES IN THE TRIGGER MUST BE DEGREASED AS WELL AS THE 2 SET SCREWS. Once degreased, install the screws in the trigger.
- Please note the shorter 3mm x 3mm set screw goes in the top hole, the longer 3mm x 4mm screw goes in the over-travel hole in the center of the trigger.
- This is critical.
- Completely reassemble the pistol and install the slide assembly, leave the magazine out for now.
- Fully cock the pistol in SA, hold the hammer from falling as you depress the trigger and fully lower the hammer carefully by hand being certain to keep the muzzle pointed in a safe direction. Hold the trigger back not allowing it to return forward. You are now in the double action pre-reset mode.
- Very slowly allow the trigger to return fully forward, feeling & listening for the trigger reset.
- If the action will not reset, screw the upper set-screw inward slightly.
- If the action resets, but the trigger continues to travel forward after reset, back the upper set-screw out.
- The goal is to have full, reliable reset, precisely at the time the set screw limits the trigger’s forward travel in the double action mode.
- The best Loctite on the upper set screw (3mmx3mm) is the red Loctite once the optimum setting is established. We suggest getting the feel for the proper adjustment, then back out the upper screw to expose as many of the threads as possible w/o the screw backing all the way out. Apply a very small amount of red Loctite, then make the final adjustment.
- Once adjusted properly, the action should reset consistently. With the trigger at reset, you should see a rearward relocation of the trigger 5mm’s when finished. We recommend blue Loctite on the longer 3mm x 4mm single action over-travel set screw.
- You should notice the DA stroke is now shorter and quicker, which is an unadvertised additional benefit, since the RRK also reduces the double action lock time. The mechanical leverage of the trigger is now different and produces a lighter “felt” DA trigger pull.
- With the stock springs, reliability will be 100% in DA. If you use a lighter hammer spring, 13#’s is the lightest you can use, but you MUST change the firing spring or miss-fires will result. You must use CGW’s extended firing pin for hammer springs lighter than 13#’s.
- The longer 3mm set screw is adjusted based on the hammer hook(s) completely clearing the sear’s leading edge with the trigger fully depressed in single action. The hammer hooks cannot contact or drag on the sear’s leading edge at the moment the sear releases from the hammer hook(s).
Ultra-Lite Kit Installation
DO NOT MIX SPRINGS; use only the springs supplied in this kit. DO NOT retain any OEM springs currently installed in your pistol that are replaced by the CGW kit. DO NOT use any other hammer springs with this kit other than the ones supplied or misfires will occur. NEVER use a hammer spring greater than 15 pounds with this kit.
- Premium 61050 S-7 tool steel extended firing pin w/spring for FP block CZ’s. PN: EXTFP for the Shadow and 85 series that do not use a FP block.
- 61100 tempered spring steel FP retaining pin (not used in the Shadow/85)
- HS-12000 (Black 1 1.5# hammer spring)
- HS-13 (Blue 13# hammer spring)
- RP-FPBS reduced power firing pin block spring (not used in the Shadow/85)
The firing pin is a premium Made in the USA part and uses a special firing spring matched to the hammer springs included in this kit. DO NOT use any other FP spring.
This Ultra-Lite kit contains 2 different hammer springs: The “black” spring is CGW part number HS-12000 rated at 11.5#’s. This spring should work reliably with Federal and Winchester primers. This spring will produce a 5.0- 6.0 pounds DA pull with stock internals.
The “blue” spring is CGW part number HS-13, rated at 13#’s. This spring will work reliably with practically any ammo, including small rifle primers. This spring will produce a 7.5 – 8.0 pounds DA pull with stock internals. If reliability is the primary concern, this is the spring to use and is the only spring recommended for self-defense applications.
The smallest spring in the kit is the firing pin block plunger spring located in the slide. You will have to remove the cross-pin in the slide that holds the firing pin and plunger to replace this spring. It makes no difference which direction this pin is driven from.
Test fire your pistol with the ammo you intend to use. If any misfires occur with the HS-12000 spring, install the HS-13.
Dry firing: Your CZ is safe to dry fire when using our part number 61050 firing pin and 61100 FP retaining pin
Contact CGW for technical support or questions by using our contact page on our website.
Or call 318-738-1464 select option 1
Modification of your firearm may void the warranty of the manufacturer. This product or any CGW product should be installed by a qualified gunsmith. No liability is expressed or implied for damage or injury as a result of improper installation or use of this or any other CGW products.