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CPS_Lite - Press Mounted Primer Seater


The CPS_Lite was designed to provide a lower-cost alternative to the CPS for shooters that desired a robust and precise high-volume primer seating tool. The limitations of other priming tools are self-evident to those that have used them for a 300, 500, or 1000rnd priming session. Hand priming tools can cause extreme fatigue in your thumbs and hands. This is especially true when you have a batch of brass with tight primer pockets.  The bench-mounted units are often quite a lot safer, but generally much slower. They also often lack the same "feel" you get with the hand priming tools.

The CPS_Lite screws right into your existing reloading press and allows you to prime quickly and precisely using the same shuttle systems from our CPS design.  

Good for right-handed or left-handed use. The orientation of the CPS_Lite can be changed for left hand or right hand presses by using the included die lock ring.

Speed, without sacrificing precision or reliability. Some priming tools are very fast. Others are very precise. The CPS_Lite is both fast and precise.  You can achieve seating depths accurate to within a thousandth of an inch, all while priming at a comfortable rate of over 15 cases per minute. 

Precise primer seating depths. Precision rifle shooters know that one of the keys to reducing your extreme velocity spread is to ensure consistent powder ignition. The CPS_Lite has an adjustable mechanical hard stop built in to ensure you can set the primer depths right where you want them, and hit that depth with each stroke of the ram. 

Universal primer tube loaded. You can use nearly any brand of primer tube for simple and effective loading of primers into the tool. No more plastic trays to break or fumble with. As long as the tubes have an outside diameter of .312" or so, you can use them with the CPS.  The unit ships with both small rifle and large rifle priming tubes.  

Integrated shuttle feeding system. The CPS_Lite uses a manually-operated shuttle system to slide primers from the primer tube into position over the primer rod. This ensures that any jams or misaligned primers are easily and safely discovered by the operator. Slight finger pressure is all that is required to position a primer for seating. Sliding the shuttle rearward until it stops will capture a primer from the primer tube. Sliding the shuttle forward will position the primer over the priming rod.  This is an effortless motion which completely isolates the primer being pressed into the case from the rest of the primers in the primer tube.  The manual operation also ensures that you will be able to feel any malfunctions immediately and allow you to stop if a jam occurs.  

Press-mounted. The CPS_Lite is a press-mounted priming tool. You screw the CPS_Lite right into the top of your existing reloading press, which turns your press into a precision priming machine! 


Or call us to order your CPS_Lite today!


  • Primes nearly any case, including 338Cheytac, 375Cheytac, and 408Cheytac.
  • Fully ambidextrous, for ease of use.
  • Uses inexpensive Lee/Sinclair shell holders.
  • Incredibly fast without sacrificing precision.
  • Adjustable primer seating depth.
  • Universal primer tube compatibility for ease of loading.
  • Manually operated shuttle feeding system.
  • 100% machined All-billet design. No cheap cast or plastic parts to break.

Included in package: 

- Product Instructions
- CPS_Lite
- Small primer shuttle assembly & priming rod
- Large primer shuttle assembly & priming rod
- Small primer feed tube
- Large primer feed tube

Not Included:
Primer Flip Tray
Shell holders for your cartridges.  

The CPS_Lite is compatible with Lee Auto-Prime type shell holders.  This is also the same style used by 21st Century, Sinclair, and other priming tools.  The CPS is not compatible with RCBS and Hornady type shell holders which are used in their presses. 

Here's how to determine primer seating depth! 

Step 1 


Use the stem of your caliper to measure your primer pocket depth and record this measurement.  In the image above you can see the primer pocket measures .128" deep.  

Step 2



Measure the thickness of your primer.  You can measure the primer from the bottom of the cup to the top of the anvil as is seen in the first image, or from the bottom of the cup to the top of the cup as seen in the second image.  Subtracting the second number from the first will tell you how far the anvil is protruding from the top of the cup.  So in this example we can see that the primer anvil was protruding .008" or 8 thousandths of an inch.  From here you can decide just how you want to seat your primers.  If you want the anvil to just touch the bottom of the primer pocket, you would subtract your primer thickness of .125" from the primer pocket depth of .128", which would seat the bottom of the primer cup .003" beneath the base of the case.  If you wanted to seat all the way to the primer cup, completely compressing the anvil into the primer, then you would subtract .117" from .128" giving you a measurement to the bottom of the primer cup of .011" beneath flush.  

Step 3


Once you've decided on what depth you want to seat the primer, you can use the caliper stem to check your work.  On the example above, we have compressed the primer anvil slightly, resulting in the primer cup being 8 thousandths below flush.  

Call Us Today To Order!    605-554-1911

Primal Rights, Inc
33 3rd St SE STE 101
Huron, SD 57350

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