Democratic presidential candidate Beto O’Rourke is calling on his fellow 2020 primary opponents to sign onto the March for Our Lives plan that outlines a progressive gun reform policy agenda.

“So we’re left with a choice. We can stick by what we’ve been doing — playing it safe, while we beg Mitch McConnell Addison (Mitch) Mitchell McConnellDemocratic senator to party: 'A little message discipline wouldn't kill us' House to vote on resolution affirming peaceful transition of power Republican lawyers brush off Trump's election comments MORE to take action on the floor of Congress. Or we can follow the lead of the students marching for their lives and for all of ours, who are demanding we do more to protect them,” the former Texas congressman wrote in an op-ed published in Teen Vogue on Monday.

“I choose the kids. And the question I have for my fellow Democrats in this race and in Congress is: Do you?” ADVERTISEMENT

The “Peace Plan for a Safer America” calls for a mandatory buyback program of assault-style weapons. O’Rourke has been an outspoken advocate for such a proposal since a mass shooting in his hometown of El Paso, Texas, killed 22 people at a Walmart.

Several other 2020 primary candidates back a buyback program, but O’Rourke is the only candidate to sign onto the March for Our Lives plan, according to his campaign.

The March for Our Lives movement was started by survivors of the high school shooting in Parkland, Fla., It inspired marches across the country.

O’Rourke, in his op-ed, recalls marching with his son Henry on his shoulders in the El Paso march.

“As we finished marching, we were met by counter-protesters flaunting AR-15s. And when Henry saw them, he asked me why they were there — because, in his mind, assault weapons didn’t belong at a March For Our Lives,” O’Rourke wrote.

“I told him he didn’t have anything to worry about. ‘Just ignore them,’ I said. But when an alleged white supremacist killed 22 people in my hometown of El Paso with a similar weapon, I realized I was wrong and Henry was right,” he added.

O’Rourke’s op-ed was published before a gun safety forum co-hosted by March for Our Lives that will feature 10 Democratic presidential candidates on Wednesday.

Along with O’Rourke, former Vice President Joe Biden Joe BidenFormer Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick Bloomberg rolls out M ad buy to boost Biden in Florida MORE, Sen. Cory Booker Cory Anthony BookerThe movement to reform animal agriculture has reached a tipping point Watchdog confirms State Dept. canceled award for journalist who criticized Trump 3 reasons why Biden is misreading the politics of court packing MORE (N.J.), South Bend, Ind., Mayor Pete Buttigieg Pete ButtigiegBillionaire who donated to Trump in 2016 donates to Biden The Hill's Morning Report - Sponsored by Facebook - GOP closes ranks to fill SCOTUS vacancy by November Buttigieg stands in as Pence for Harris's debate practice MORE, former Housing and Urban Development Secretary Julián Castro, Sen. Kamala Harris Kamala HarrisTexas Democratic official urges Biden to visit state: 'I thought he had his own plane' The Hill's Campaign Report: Biden on Trump: 'He'll leave' l GOP laywers brush off Trump's election remarks l Obama's endorsements A game theorist's advice to President Trump on filling the Supreme Court seat MORE (Calif.), Sen. Amy Klobuchar Amy Klobuchar3 reasons why Biden is misreading the politics of court packing Social media platforms put muscle into National Voter Registration Day Battle lines drawn on precedent in Supreme Court fight MORE (Minn.), Sen. Bernie Sanders Bernie SandersSirota reacts to report of harassment, doxing by Harris supporters Republicans not immune to the malady that hobbled Democrats The Hill's Morning Report - Sponsored by Facebook - Republicans lawmakers rebuke Trump on election MORE (I-Vt.), Sen. Elizabeth Warren Elizabeth WarrenOvernight Defense: Appeals court revives House lawsuit against military funding for border wall | Dems push for limits on transferring military gear to police | Lawmakers ask for IG probe into Pentagon's use of COVID-19 funds On The Money: Half of states deplete funds for Trump's 0 unemployment expansion | EU appealing ruling in Apple tax case | House Democrats include more aid for airlines in coronavirus package Warren, Khanna request IG investigation into Pentagon's use of coronavirus funds MORE (Mass.) and businessman Andrew Yang Andrew YangBiden's latest small business outreach is just ... awful Doctor who allegedly assaulted Evelyn Yang arrested on federal charges The Hill's Campaign Report: Biden weighs in on police shootings | Who's moderating the debates | Trump trails in post-convention polls MORE will participate.

Gun reform activists have been pushing for Congress to pass a universal background check bill in the wake of mass shootings across the country over the summer.

The House passed a universal background check bill in February but it has yet to be called for a vote in the Senate.

Senate Majority Leader Mitch McConnell (R-Ky.) has shifted the focus to the White House, saying he will only call a bill to a vote that President Trump Donald John TrumpFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Former Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick MORE will sign. Trump has wavered on his support over such a reform measure.