Harris model 25 bipod, extends from 11 to 25 inches. Attaches to your front sling swivel stud, or if you don't have one, to an adapter. Spring-loaded retractable legs, rubber feet. $70 shipped SOLD
Harris model 4 bipod adapter. This is the one that clamps to your barrel. $20 shipped SPF
Both items are lightly used and in good condition. Harris makes great bipods, as sturdy as they get. I wouldn't be parting with this but I bought a Harris swiveler.
These items are also listed elsewhere, so first I'll take it trumps all. I'm open to trades, what have you got?