I just received an aluminum barrel from the site mentioned on Tomzag's page...well..except for a what I would consider a "lack" of order confirmation from "them"(they use Paypal,who I DONT like[&o])....I got the order in about 1 week.Just waiting for them to restock metal KT tracks[>:]
On your Pershing,I would look into metal tracks, as the stock ones seem to wear out fast on these(at least mine are,I run a lot on a brick patio in backyard,no dirt out there, only grass[&o])