Compass Lake Engineering 2-Stage Trigger
This is the “Frank White” trigger you have heard so much about. It uses mostly stock parts that are modified extensively by this legendary rifle smith. It uses a normal AR hammer, but has a modified hammer spring. These conversions will work in Colt rifles, although those with the unique “COLT block” will need to be modified. The CLE trigger does require careful installation and initial adjustment, but after that will give you many, many years of excellent shooting for a modest investment.
This trigger can be installed by the shooter if he has good mechanical skills and patience. We will be glad to offer phone help.
This trigger is immediately available for mil spec lowers or Colt lowers
1. Remove hammer, trigger, and safety selector from lower receiver.
2. Install trigger and disconnector into lower. Lubricate pin with Break-free.
3. Remove spring plunger unit from safety selector. Install safety selector into lower receiver and tighten the pistol grip. Leave the spring plunger out at this time.
4. Lubricate the trigger engagement notch in the hammer with only NECO Moly-Slide.
5. Adjust the over-travel. Using a 1/16″ Allen wrench, screw the over-travel stop in until the hammer does not fall when the trigger is pulled. While holding tension on the trigger, back out the over-travel stop until the hammer falls. Back out another one-tenth of a turn. Tighten the over-travel lock screw using a .035″ Allen wrench. Ensure that with the trigger pulled against the stop, that the hammer moves freely without rubbing the trigger.
6. Install the spring plunger into the safety selector. Screw in the plunger using needle-nosed pliers until a second state is obtained. Screw the plunger in another one-twentieth of a turn. Tighten the spring plunger lock screw. Operate the trigger 20 to 30 times to test for proper operation and to break in the engaging surfaces. Back out the set screw in the top of the spring plunger to obtain a light but positive second stage.
Rough first stage:
–improper or insufficient lubrication
–initial hammer spring tension too heavy
–trigger may need additional breaking in
Trigger does not return when pulled to second stage and released.
–insufficient or improper lubrication
–hammer spring tension too heavy
–insufficient sear engagement
Correction: turn spring plunger in one twentieth of a turn to correct insufficient sear engagement.
Second stage “creepy” or “spongy”
–excessive sear engagement
Correction: back the spring plunger out to obtain a crisp second stage
Trigger break in is best accomplished by ‘dry firing’ the trigger. It doesn’t matter to the trigger if this is done with or without the upper in place. If you are going to do it with just the lower, stuff some patches or something similar in front of the hammer so it doesn’t impact the front of the trigger cavity in the lower each time it is fired.
Each time you dry fire, take up the first stage completely, then let it off and take it up again. Then release the second stage. This will help you get the feel of the two stage trigger. If problems are going to develop, it will be the failure to return to the un-pulled condition on this second stroke.
About 200 shots of dry firing should be sufficient.
When you are done and completely happy, check the tightness of the two small lock screws in the back of the safety selector for tightness. You should check these periodically as you clean the weapon.