“Dead Shot” is a lean, myopic thriller that remembers the IRA wars against UK “paras” and special units as tit-for-tat violence that couldn’t help but turn “personal.”

Set against the IRA London bombing campaign of 1975, it enfolds dueling personal vendettas — the IRA gunman (Colin Morgan of “Belfast”) who wants to kill the re-assigned soldier who murdered his pregnant girlfriend, and that soldier (Aml Ameen of “Till Death”), now in an extra-legal anti-terror squad taking down IRA cells by any means necessary, wants to “finish the job” with that terrorist.

It begins with Michael O’Hara making a frantic dash into South Armagh to fetch a very-pregnant Carol (Máiréad Tyers) and get her to the hospital. Her house is being watched. When he stops the car to make his escape, she is killed by Sgt. Tempest in what was almost an accident.

“You are about to be prosecuted for murder,” the mysterious plainclothesman Holland (Mark Strong, of course) tells him. Unless, of course, you come “work for me.” “Number 10’s had enough,” and he can use a “dead shot” like Tempest in his “fight back on their terms” anti-terror squad.

There’s a really good “Oh come on” moment that could take you right out of this movie right in that opening act. We see Michael O’Hara fired upon by several soldiers and hit when he storms back to shoot at the men who murdered his girlfriend. But somehow, he gets away.

He’s told “There is another way” by the couple who take him in and nurse him back to health.

“There was,” he says, remembering his promise to “get out.” “Not any more.”

He’s off to London with orders to join a bombing cell there, and a chance to avenge himself on the man who murdered his beloved Carol and their baby.

Felicity Jones plays an IRA scout/photographer/messenger in London. Sophia Brown plays Tempest’s shopkeeper/back-up singer girlfriend, the first “target” in vengeful O’Hara’s sites. Tom Vaughan-Taylor plays a ruthless IRA officer and Dara Devaney an accomplice Michael will need to get his revenge.

Co-writer/directors Charles and Thomas Guard (Ronan Bennett also contributed to the script) stage the action beats with skill and do a decent job of maintaining suspense. And the production does a grand job of recreating the mid-70s gloom, grunge and violence of Northern Ireland and London.

The performances are bowstring-tight and the story marches by in double-time.

But there’s an over-familiarity to the themes and a willingness to seemingly take sides that doesn’t seem to fit the material.

And that “How’d he escape” boner in the first act is bookended by a “There’s a rooftop sniper and nobody’s running” shooting in the last act.

Aside from that, “Dead Shot” is more or less on target, a B-thriller that does what you hope and expect one to do, especially considering this subject matter.

Rating: unrated, graphic violence, profanity, smoking

Cast: Aml Ameen, Colin Morgan, Sophia Brown, Tom Vaughan-Taylor, Dara Devaney, Felicity Jones and Mark Strong.

Credits: Directed by Charles Guard and Thomas Guard, scripted by Thomas Guard, Charles Guard and Ronan Bennett. A Quiver release.

Running time: 1:31′