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Mauser Rifles – M12 (pre-2019) vs. M12 (2019-onward)

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Mauser Rifles – M12 (pre-2019) vs. M12 (2019-onward)

Mauser introduced their first M12 rifle back in 2012. Some of the design features were inspired by the already successful Sauer 101 – both rifles featured hammer-forged barrels, full-diameter bolt bodies with six forward lugs locking up directly into the barrel, and high-capacity, rugged-polymer detachable magazines. The mounting surface on the receiver was drilled and tapped, borrowing the mounting dimensions of the Mauser M98 Standard making the mounts interchangeable between the rifles. Combining all the great qualities of modern bolt-action, M12 quickly became a commercial success.

Mauser M12, produced before 2019
Mauser M12, produced before 2019 (Source: https://www.africahunting.com/threads/just-purchased-a-mauser-m12-in-9-3-x-62.11459/)

No significant changes were made to the rifle until 2019 when it underwent a complete reshaping of the mounting surface. The redesigned M12 inherited the receiver shape of Remington 700 LA, further expanding the mount-interchangeability options with a broad array of rifles. However, other structural components, apart from somewhat modernised polymer materials, remained mostly the same.

Mauser M12, produced from 2019 onward
Mauser M12, produced from 2019 onward (Source: https://twitter.com/hrastelj/status/588037308395495425/photo/1)

How To Choose the Suitable Mounting Solution for M12

Having the best of intentions, Mauser decided to stick with the M12 name up to this day. Showing little to no indication of the major design change in 2019, many customers were left confused or ended up buying ill-suited mounts. This article should clarify any ambiguity regarding the topic and help you choose the suitable mounting solution for either version of M12.

Side-by-side comparison of M12 models
Side-by-side comparison of M12 models (‘2019-onward’ version at the top and the ‘pre-2019’ version at the bottom of the picture

Mauser M12 (pre-2019)

When choosing the suitable mount for Mauser M12 (pre-2019), please consider the following receiver dimensions:

A: 22 mm

B: 101.7 mm

C: 12.7 mm

BHU: 4 mm

Ø: M3.5

R1: R14/30°

R2: R18

The receiver of M12 produced before 2019, based on Mauser M98
The receiver of M12 produced before 2019, based on Mauser M98

Please note that the radius of the front and rear mounting surface and the receiver dimensions are the same as those on Mauser M98 Standard.

For a better visual representation, please see the sketch at the end of the article.

If you are interested in purchasing scope mounts for Mauser M12 (pre-2019), you can see our offer here:

Mauser M12 (pre-2019)

Mauser M12 (2019-onward)

When choosing the suitable mount for Mauser M12 (2019-onward), please consider the following receiver dimensions:

A: 21.9 mm

B: 113.9 mm

C: 15.3 mm

BHU: 2.9 mm

Ø: 6-48

R1: R51

R2: R17

The receiver of Mauser M12 produced from 2019 onward, based on Remington 700 LA
The receiver of Mauser M12 produced from 2019 onward, based on Remington 700 LA

Please note that the radius of the front and rear mounting surface and the receiver dimensions are the same as those on Remington 700 LA.

For a better visual representation, please see the sketch at the end of the article.

You can see our scope mounts offer for Mauser M12 (2019-onward) here:

Mauser M12 (2019-onward)
skica_dimenzij_zRadiusi_2x2
The mounting surface sketch
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Mauser Rifles – M12 (pre-2019) vs. M12 (2019-onward)
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Mauser Rifles – M12 (pre-2019) vs. M12 (2019-onward)
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Optics Trade Blog
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