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Second, I hate the trigger. I understand there are large pin and small pin triggers. How do I tell what I have, I want a crisp 2.5 pound two stage pull.

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Originally posted by mgoodrich:
For the magpul PRS you need to get an A2 rifle tube. These come in kits with a spring and buffer. ~$35. https://www.ar15handguard.com/...fer-tube-kit-rbt308/

The PRS comes in a mil spec/commercial grade where the tube diameter is different between them, just need to make sure they match.

Or, you can get a tube extension, and a new spring. https://heavybuffers.com/springs.html. The buffer itself may work. They do come in different weights. I would just try what you have, or just buy the whole kit from above.

You can also ask Magpul to double check if these kits would work, and they will let you know.

I personally have not replaced the stock on mine to the PRS, so I cannot say for sure that these kits work, but you get the idea of what needs to be done.

For the trigger, I replaced my trigger with this, https://geissele.com/super-sem...d-ssa-e-trigger.html. I found this worked well on mine. You need the small pin.