WEYMOUTH — When the Weymouth Police Department's Narcotics Unit knocked on the door at 327 West Street on Thursday, they pulled out a one-stop-shop sampler of nearly every controlled substance currently destroying New England — fentanyl, methamphetamine, gabapentin, crack, and coke — plus a loaded 10mm Glock with the serial number filed off, large-capacity magazines, ammunition, and a child under 18 in the home, the department said Friday.

Three people were taken into custody on a stack of drug-distribution, firearms, and child-endangerment charges following the search-warrant execution, according to the department.

It took the Weymouth PD Narcotics Unit, the Quincy Police Department Drug Control Unit, the Randolph Police Drug Unit, and the Norfolk County State Police Drug Unit to shut it down.

The suspects:

Inside the home, investigators seized "quantities of suspected cocaine, crack cocaine, fentanyl, methamphetamine, gabapentin, and other evidence consistent with narcotics distribution," the department said. They also recovered the Glock with the defaced serial number, the large-capacity magazines, and ammunition. None of the three suspects held a valid Massachusetts Firearms Identification Card (FID) or License to Carry (LTC) — and yes, you actually need one of those to legally carry a handgun in Massachusetts, even one with the serial number intact.

Jennings and O'Hara face nearly identical charge sheets — and they are long. Trafficking 29.6 grams of cocaine (the 18-to-36-gram tier), four separate intent-to-distribute counts (fentanyl, methamphetamine, crack cocaine, gabapentin), three firearms violations tied to the defaced Glock and the large-capacity magazines, two ammunition counts, use of a motor vehicle in the commission of a felony, and — most damning — reckless endangerment of a child under 18. Jennings additionally faces a cocaine-distribution count and an operating-with-a-suspended-license charge. The no-license-to-carry rule and the no-license-to-drive rule were apparently both inconvenient.

Pizzi wasn't supposed to be at large in the first place. He was rolled up on three outstanding warrants — six counts of cocaine distribution and conspiracy to violate drug laws, plus two larceny counts. The Weymouth raid found him.

All three were transported to Quincy District Court Friday for arraignment. Jennings was ordered held without bail. Pizzi was held pending the posting of bail. O'Hara — facing the same trafficking-and-distribution-and-firearms charge sheet as Jennings — was released after posting bail.

All defendants are presumed innocent unless and until proven guilty in a court of law.

The Weymouth Police Department's Drug Tip Line is 781-682-6131.