Professional Services

  • Case Review & Re-examination of Evidence

  • Firearms Testing & Evaluation

  • Ammunition Evaluation & Testing
  • Cartridge Case Ejection Pattern Tests
  • Digital Trigger Pull Analysis

  • Fingerprint Expertise

  • Shooting Scene Reconstruction & Re-enactments
  • Gunshot residue analysis (GSR) & GSR Consultation
  • Distance Determinations from Gunshot Wounds & Clothing
  • Gun Safety & Design Issues
  • Crime Scene Examinations & Consultations
  • DNA Expertise

  • Expert Witness Testimony
  • Self-defense Event Analysis
  • Tortious Liability Review
  • Negligent Use Evaluation & Testimony
  • Bullet & Cartridge Case Comparison Microscopy

  • Catastrophic Firearm Failure Analysis

  • Forensic Pathology

Leica FS C Comparison Microscopes for Tool Mark Comparisons

By providing ballistics services using our Leica FS C comparison microscopes and technology, we can equip your defense with data such as detailed micrographs of discharged cartridge casings and spent projectiles. Such examinations can verify current certifications or bring new findings to light – flipping your case in seconds.

JEOL Scanning Electron Microscope with Electron Dispersive Spectrometry Detector for Gunshot Residue Analysis/Re-analysis

G&G can retest state evidence or perform our own testing of evidence from items such as clothing or vehicles. We perform GSR analysis and re-analysis using our JEOL SEM/EDS and the sophisticated Oxford Instruments AZtecGSR software. Download PDF.

Starrett L2+ Force Gauge for Trigger Pull Testing

If your client is charged with misuse or possession of a firearm, it is in your best interest to have the firearm/s examined. Performing a trigger pull analysis test using the Starrett L2+ Force Gauge is the most modern form of testing to date. With detailed reports, digital graphs, and force measurements, G&G can determine if a firearm meets the manufacturer’s specifications in the event of an intentional/unintentional/accidental discharge or catastrophic failure. If the examination results do not meet manufacturer specifications, G&G will offer viable strategy solutions.


“Based upon Greg’s knowledge of automatic and semi-automatic weapons, we were able to successfully cross-examine the Commonwealth’s alleged ballistic expert and expose the weakness in their case. G&G Firearms are professionals who maintain a high-degree of integrity, and I would not hesitate to use them in any firearms case.”

Arthur Tourkantonis, Attorney at Law

“Thank you for your expert assistance in helping us evaluate a recent case involving firearms safety. You conducted your investigation professionally, discretely, and confidently, and I do not hesitate to recommend your services as a firearms safety expert.”

Jonathan D. Sweet, Counsellor at Law

“All your hard work in identifying the firearm, getting the appropriate instruction manuals, viewing and identifying the weapon, and then finding a similar weapon and doing a video for me clearly made the case for the defendant much, much better and ultimately contributed greatly to obtaining the favorable result we did. I cannot too highly recommend G&G Firearms to any other person who needs a true firearms expert.”

Ray Buso, Attorney at Law

“Performing services as a professional gunsmith, firearms trainer, and forensic ballistician, I highly recommend Mr. Danas as a qualified ballistician / forensic expert.”

Steven S. Kim, Esq.

“Please put G&G Firearms’ name at the top of your list when considering attorney referrals for ballistics experts. You will be doing him a favor.”

Chuck Mathers, Attorney at Law

How Can We Help Your Litigation?

Call us to discuss your case merits.

  • 1-978-833-7255

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