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Property and Equipment (Tables)
6 Months Ended
Jun. 30, 2019
Property, Plant and Equipment [Abstract]  
Schedule of property and equipment
   June 30,
2019
   December 31,
2018
 
Shop machinery and equipment  $147,194   $87,534 
Computers and electronics   51,398    32,093 
Office furniture and fixtures   39,080    37,814 
Leasehold improvements   37,748    19,514 
    275,420    176,955 
Less - accumulated depreciation   (145,574)   (123,725)
   $129,846   $53,230