Here in Massachusetts operating under the influence of alcohol (OUI) is a misdemeanor punishable by up to two and a half years in jail. See G.L. c. 90, Sec. 24(1)(a)(1).
Consequently, an OUI conviction disqualifies you from getting a firearms identification (FID) card or a license to carry (LTC) in Massachusetts. See G.L. c. 140, Sec. 121F(j)(i)(B).
This disqualification period ends five years after your OUI sentence or probation is completed. At that point you can petition your city or town’s police chief for a new gun license. See G.L. c. 140, Sec. 130B(d).
First-offense OUI convictions (i.e., guilty findings) usually happen only if you take your case to trial and lose.
The vast majority of first-offense OUI defendants resolve their cases with a plea agreement and a continuation without a finding (CWOF).
This is part of the standard “24D disposition.” (For more information, read my post Drunk Driving (OUI) First Offense in Massachusetts.)
Unlike a conviction, a CWOF does not disqualify you from getting a gun license, according to G.L. c. 140, Sec. 121.
Nevertheless, your licensing authority (i.e., your police chief) could consider the drunk-driving CWOF a basis for denying your FID or LTC application. That authority is found in G.L. c. 140, Sec. 121F(k).