June is only half over, and already this month seven innocent bystanders have been struck by bullets, two fatally, around the city.

The four-borough fusillade — only Staten Island was unscathed — included a 7-year-old boy injured in the Bronx and a 15-year-old girl shot in Brooklyn.

Two elderly Queens women, ages 74 and 82, were grazed by slugs from an AK-47-style rifle after the military-grade ammo penetrated their kitchen wall, a high-ranking source told The Post.

And it was a second long gun, this one an M1 carbine rifle firing .30-caliber rounds, that claimed the life of Winston McKay, 40, who was hit as he walked his dog on a pre-dawn Monday morning in Harlem, the source said.

“It’s two shootings with a long gun within a week,” the high-ranking source told The Post, noting that pistols typically account for the vast majority of gunfire in the city.

Bullets from both the M1 and the AK-47 can penetrate walls, doors, cars and bulletproof vests, the source noted, calling the weapons “very lethal.”

“It’s terrible that somebody has those guns on the street, and they’re brazen enough to walk around with that . . . There’s no reason in the world that anyone should have them,” the source said.

“They’re not even hunting guns,” the source added. “They’re meant to kill military combatants.”

Queens victims Mavis Claggett, 82, and Beulah Clark, 74, survived the June 5 shooting only because the AK-47 ammo that struck them had been slowed by Claggett’s kitchen wall in Laurelton.

“The women were lucky they didn’t die,” the source said.

Three suspects have now been busted in the six shootings, after two men who allegedly traded gunfire in the incident that wounded the 7-year-old were arrested, police said Thursday.

Kamal Dockery, 17, is facing weapons and endangerment charges for allegedly accidentally shooting a 47-year-old woman 10 blocks from his Harlem address.

The most recent victim, Angela Saltarelli, suffered a deep graze wound to her left arm near the Pelham Parkway Houses on Wednesday within a block of a school.

“I just think that the government is not doing a very good job with the gun control,” Saltarelli, 39, told The Post on Thursday.

She said she’d been walking a neighbor’s little boy to school when she heard what she thought were fireworks.

“I heard two shots, and I thought, ‘Oh, my God, these people are starting fireworks already.'”

Then, “I looked down and saw all the blood gushing out,” she said.

“A few good Samaritans came and wrapped a belt around it to stop the bleeding.”

Police took her statement at the hospital, she said, but have not questioned her since.

Additional reporting by Katherine Lavacca, Stephanie Pagones and Laura Italiano