Parker Brothers  1919 DHE shotgun
A 1919 Parker Brothers DHE 12 gauge

What We Believe


RareRoper Revolving 16 gauge Shotgun

Jack Cochran


Jack Cochran is a lifelong gun collector and specializes in shotguns and sporting rifles.

John Parker










  • Honesty

    We deal with our customers like we want to be dealt with.  When we make an offer to buy your firearm, collection or estate, we offer you the best price for the quality and condition of each piece.


    We sell our inventory at fair market value.  Never an inflated price or mis-represented quality or condition.


  • Transparency

    We are meticulous record keepers.  We can tell you what your piece sold for and when it was sold.  Our record-keeping protects you and it's the law.

  • Integrity

    We deal in clear straight forward terms.  If you prefer for us to take your collection or estate on consignment, we will mutually agree on a price and we will not sell for anything less.  If we get an offer less that agreed, and we think it is reasonable, we'll call you and give you the option.  It's always up to you.

We buy guns, military guns, antique guns
We buy shotguns, sporting rifles and accessories

OnMarkUSA provides many services to the gun collectors, gun purchasers and those wanting to sell their collection or estate gun collection.  As lifetime gun collectors and enthusiast, we appreciate the value and history of firearms.   American firearms, like Parker, Colt, Remington to European and Military models like Lugers and Walthers all have admirers in the gun collecting world.  We buy almost all types of gun; shotguns, sporting rifles, pistols, revolvers, military firearms and gun related accessories.

Our business carries us around the country to trade shows, auctions and events where we both buy and sell.  Certain areas of the country seem to prefer one type of firearm over another, and it gives us a chance to keep up with markets throughout our country and we will take your consigned item to the best venue. We'll show you the best way to sell your gun or gun collection.

We also attend auctions, both in person and on-line.  Auctions are an excellent place to both buy and sell items.  Not all auctions are good ones and we only deal with those that are reputable and we have dealt with for many years.

Who is OnMarkUSA? and What do we do?


Civil War Musket with Bayonet

We're Involved!

1896 6 shot Mauser Cone Hammer
WE buy military weapons and memorabilia.

John Parker has been a firearms collector for more than 40 years. John's specialty is all things military, antique arms and memorabilia.

John is the current president of the North Carolina Gun Collector's Association (1993-present), member of the Ohio Gun Collectors and Forks of the Delaware Historic Arms Collectors.

John spent 10 years in law enforcement including the NC Highway Patrol and the NC State Bureau of Investigation.

How can we help?

Jack Cochran is an expert in shotguns, sporting rifles, hand guns and gun accessories. John Parker is an expert in Military firearms, militaria and antique guns.

About OnMark USA

Located in Greensboro, NC, OnMark USA is a federally licensed firearms dealer (FFL).  OnMark USA provides Gun Collector's Services throughout the United States.  Buy, Sell, Trade or Appraise, we look forward to talking with you about your needs. Please call or email with your questions anytime!

5501-C Adams Farm Lane,  Greensboro, NC  27407

Jack Cochran (336) 215 -1904  |  John Parker (336) 706-0892

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