Re: anyone make a .308 to .223 conversion kit for Dpms
In all reality, with a conversion, you'd need an upper, mags, and something to modify the mag well, etc. Likely you'd need to swap out buffers, depending on the system.
For what the upper costs and additional parts, the lowers can be assembled fairly inexpensively. Why not just build a second gun?
Palmetto puts lower build kits on sale as well as stripped lowers often as low as $50. Its not unheard of to be able to assemble a lower for $200, if you're willing to use some lower end parts.