will these piston conversion (cmmg/ares) work with this rifle (dpms)

[Serp]

will either of these:

http://global-tactical.com/aresdefensegaspistonconversionkits---instock.aspx

http://www.impactguns.com/store/100003961.html

work with this

http://www.armalite.com/ItemForm.aspx?item=10A2C&Category=f4bd4a13-55d1-41aa-aea0-49488ec48776 &ret_url=Categories2.aspx?Category=f4bd4a13-55d1-41aa-aea0-49488ec48776

or

http://www.dpmsinc.com/firearms/firearm.aspx?id=55