Brace yourself for a stampede of new crime dramas set in the gun-toting heartland.

 On the heels of the, well, historic numbers achieved by History’s “Hatfields & McCoys” miniseries, A&E reported Monday that Sunday’s launch of its new drama “Longmire” set ratings records when it clocked an average of 4.1 million viewers Sunday night at 10.

 That crowd makes it the network’s No. 1 original series premiere of all time and cable TV’s No. 1 new scripted drama series of 2012 to date.

 The achievement comes days after History’s three-part miniseries about the famous clan clash of the Hatfield and McCoy families clocked 14 million viewers on Monday, 13 million on Tuesday, and more than 14 million on Wednesday, becoming the most watched scripted entertainment program in basic cable history.

 Based on the Walt Longmire novels by Craig Johnson, “Longmire” stars Robert Taylor as the plain talking, straight-shooting, sorrow-harboring sheriff of Absaroka County, Wyoming, and Katee Sackhoff as his dedicated deputy/greenhorn from Philadelphia.