German rifle maker Mauser has introduced a brand-new straight-pull rifle, the M25, with a unique locking mechanism featuring two massive locking lugs, covering 66 square millimetres of contact over a 250° portion of the breech.
They expand into battery when the action is closed, forced there by a solid internal piece of the bolt that slides between them and makes it impossible for them to release accidentally when a shot is fired — see how it works in the video below.
Mauser points out that this means its lugs have 10% more contact surface the renowned M98.
It comes almost 30 years after Mauser’s first short-lived foray into straight-pulls, the M1996, but the two models share little more than the Mauser badge.
Mauser boasts its action represents “a completely new level of true straight-pull experience” that is “fast and extremely smooth-running” — but it is up against excellent opposition there.
Three models have been announced: the Pure with walnut sporter stock, the Extreme with synthetic sporter stock, and the Max with an ergonomically adjustable thumbhole stock of laminated beech.
They all come in only .308 Win at this point but more calibres will be introduced, and all have 51cm barrels with a 17mm profile. Mauser has not designed the M25 to be a switch-barrel rifle.

The Pure and Extreme weight 3.2kg bare, while the Max is 400g heavier.
The M25’s trigger is progressively adjustable from 700g to 1700g, achieved by using a hex key inserted into the top of the trigger assembly through the action.
The two-position safety on the tang blocks the firing pin, and it allows unloading of the rifle when it is set to safe.
The M25 uses detachable polymer box magazines that hold ammunition in a single stack. A three-round magazine is standard but five-rounders are an option.
Mauser has developed a new scope mount to suit the action, calling it the Single Base Mount. It screws to the front of the receiver but juts back over the action to fully support a scope.
The European pricing of the M25 puts it in close competition with the Beretta BRX1, and significantly less than a Blaser; Australian pricing has not been set.
Mauser pitches it as “the ultimate tool for you if you want everything except a status symbol”.
The new rifle will be available in Australia later this year. Distributor OSA Australia is yet to confirm exactly when but dealers are taking orders already.
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