How to tell when a buffer or BCG is too light?

[TimK]

I'm building a Valk on a 24" barrel, +2" gas. I got to thinking about what BCG and buffer to use. I'll be running a JP SCS, so I have 2 oz of adjustability available there. I also have a selection of JP BCG's to choose from.

JP Aluminum - 6oz
Jp Lmos - 9 oz
JP Standard - 11 oz
JP adjustable mass 12-14 oz

I understand the trade offs between weight, recoil, and reliability. My goal is to minimize recoil as this is a gamer gun. I will be using an adjustable gas block and running at TB 5" Ultra.

What I don't understand is how to know if the combination of buffer and BCG is too light. Aside from unreliability when dirty, is there some sign I should be looking for? Aside from the reliability concern, are there other concerns with going too light?

 

[bigjake83]

Nope.... As long as it has enough mass to cycle the rifle you're good.