There's a Kull auction in Topeka, KS this weekend that has a number of interesting items. If you're not familar, Kull's partner is Jim Supica. Mr Supica is head of the NRA Museum and is known as Mr S&W, being the author of the Standard Catalog of S&W.
Anyway, they have "good stuff" on their auction.
http://www.armsbid.com/ (It's a 2 day auction so in Proxibid you have to search each catalog separately.)
.22 conversion kits for 1911, Glock and AR
Lots of late 1800s and early 1900s guns.
Colt Cap and Ball revolvers
Lots of Lever actions including 1892s, 1894s, 1895s,
Pistol/Revolver Barrels and Slides
Here's one of the more interesting items: (Prebids are already over $10,000)
Winchester - Model 1886 - .50 Express - Lever Action Takedown Rifle w/ caseExcellent condition - 26" round barrel - 99% blue finish - Deluxe Lightweight - satin finish checkered walnut pistol grip stock with strong burl grain look in excellent condition - Type 2 pistol grip cap - front fixed blade & rear adjustable ladder-type sights - faint two line barrel address "MANUFACTURED BY THE WINCHESTER REPEATING ARMS CO. NEW HAVEN, CONN. U.S.A." - crisp caliber markings - crisp Winchester proofed stamp barrel & receiver - crisp upper & lower rear tang markings - Winchester letter confirms this configuration - Type 2 takedown lever marked with "PAT. JUNE 6, 1893" - lever action in very good condition - small worn area on base of lever - Type 2B steel shotgun style buttplate - The Winchester Archive letter indicates the rifle was received in warehouse September 4, 189 and shipped from warehouse on September 12, 1896 with two other Model 1886’s – caliber: 50 Express, barrel shape: round, plain trigger, shotgun butt - yr. mfg: 1896 - Winchester presentation case - SN 108109 - est. 20000 - 35000