This O/U Shotgun was designed for an English Gunmaker by Karl Lippard of Joseph Brazier Ltd. As a design concept it is unique in the firearm world. All parts and components are totally interchangeable including the wood. This model has "SolidSolid" one piece barrels. All ribs, lugs and attachments are made of one piece of S7 VAC steel. All metal components are Vacuum Arc Remelt Steel with a tensile strength up to 328,000 psi. Brazier can design a fine firearm for you using your design queues often while you wait. Our consulting design rates are $450.00 per hour with a $35,000.00 retainer. We can produce everything from CAD to a completed firearm depending on your requirements...This O/U sidelock shotgun design is owned by Karl Lippard and is available in 12 & 20 gauge today from $32,500.00 through Joseph Brazier, Ltd., Agent or Karllippard.com