Direct Mounts

Introduction

Direct scope mounts seem like a reasonable, simplest and most logical idea of all mounts. Mostly, direct mounts are made as two piece mounts in most cases. Naturally, there are exceptions, for example DNZ mounts, which are known for single piece direct mounts.

Direct mounts can be recognized by the fact that each piece / ring is made from one single part and by the fact that such mounts are mounted directly on the rifle. Such mounts are usually mounted either on dovetail that is part of the receiver or directly on the mounting surfaces and on prepared (in advance) holes, drilled in the receiver.

PROS

Advantages of direct mounts can be found in

affordable prices,
elegant looks,
lightweight,
simple design and therefore – they are reliable because of small number of parts.

Small number of parts also means less chances of failures if everything mounted correctly.

CONS

If direct mount is made of two pieces, it might be hard to install it on the rifle. This is because it is often very hard to achieve perfect alignment of both rings (especially if the rifle is not made precise enough).

If it comes to strain because of poor alignment of both rings, it can flex the scope or even damage it. We would suggest to use a help of a skilful gunsmith who should mount them as they should be mounted.

What else does not go in favor of direct mounts, is the fact that they are always only fixed and if they are quick detachable, they are usually not repeatable.

On the market, there are both – aluminium and steel mounts. It usually depends on what you need and what material is the receiver made of. If mount is made of one piece, there can also be a problem with linear thermal expansion. This occurs two piece mounts too, but it causes more problems on one piece mounts. Temperature changes around the mount and the scope create linear thermal expansion of the materials.

In extreme cases – taking your rifle from cold weather outside to a heated room in the house (big difference in temperature of the environment) causes higher linear expansions than normal. Therefore, linear thermal expansion causes material strain which can be followed by damage on the scope or mount. The bigger the length of the one piece mount is, the bigger the linear thermal expansion is (and it causes bigger problems). Linear thermal expansion basically represents how much will some material change in length when heated (or cooled) for each degree of temperature changed.

Note: Thermal linear coefficient of expansion for aluminium is approximately twice the value of steel (or iron).

This info in theory means that in real life aluminium stick will expand twice the size, compared to the steel stick with the same dimensions, when heated for one degree of temperature. In other words: An equal temperature change will produce twice as much change in the length of a bar of aluminium as for a bar of iron or steel. Problems with linear expansions might occur when we have a aluminium direct mount installed on the steel receiver. Their different thermal linear coefficients of expansion can cause strain in screws that hold together mount with the steel receiver on the rifle. In worst case, these screws can brake or get damaged in other ways.

Is lapping needed with Direct mounts?

Lapping procedure during mounting process of direct mounts, is always needed. It is the easiest way to achieve 100 % alignment of both rings, while reducing material stress and deformations of scope and mounts, caused by the strain in materials.

Alternative to lapping process might be bedding of the scope. Usually, one of these two methods should be applied to mounting procedure of direct mounts.

Conclusion

Direct mounts might be very handy (because of its simplicity and rigidness) on rifles with dovetail on the receiver. Most known representatives of such rifles are Tikka’s, Sako’s, CZ 527’s, CZ 550/557’s etc. One of the most popular dovetail dimensions is also 11 mm wide dovetail. This is used small Tikka’s (T1x), SIG Sauer 200 STR and so on.

Correctly mounted direct mounts might be very appealing because of its slim and elegant design, yet they are also very robust and rigid. Their popularity is also connected to affordable prices, but have in mind – you might consider about the additional cost of the gunsmith’s work to it!

Compatibility Below

Filters

Sort

In stock

Rusan Roll-off Mount, 30mm, Brno ZH / Super Brno

As low as $209.00

View Product

Add to compare

Rusan Roll-off Mount, 30mm, Sabatti, FAIR, Bettinsoli, Marocchi

As low as $209.00

View Product

Add to compare

Rusan Roll-off Mount, 30mm, Antonio Zoli

As low as $209.00

View Product

Add to compare

Rusan Roll-off Mount, 30mm, CZ 584 / Tatra

As low as $209.00

View Product

Add to compare

Rusan Roll-off Mount, 25.4mm, Antonio Zoli

As low as $209.00

View Product

Add to compare

In stock

Rusan Roll-off Mount, 25.4mm, Brno ZH / Super Brno

As low as $209.00

View Product

Add to compare

Rusan Roll-off Mount, 26mm, Sabatti, FAIR, Bettinsoli, Marocchi-19 mm

Rusan Roll-off Mount, 25.4mm, Sabatti, FAIR, Bettinsoli, Marocchi

As low as $209.00

View Product

Add to compare

Filters

Sort

VIDEO

Repeatable mounts take all advantages of detachable mounts to a new level. All the advantages of detachable mounts, which are:

Detachable mounts offer possibility to use multiple scopes on one rifle,
enable easy transportation of the scope and the rifle separately,
in an emergency if the scope fails you can immediately detach it and use iron sights are upgraded with,
100% repeatability, which means that you zero all your scopes only once and then you can use them on one rifle in any combination you prefer and as many times as you wish.

Such mounts are ideal for hunting rifles, where you can use the same rifles with different optics on many different types of hunts. The perfect combination of different optics on one rifle can be described in this fashion:

Red dot sight or wide angle riflescope for driven hunts,
1.5-6x42 or similar for stalking,
3-12x56 for low light hunting.

You can add as many different optics to this setup as you wish, since this is the main concept of repeatable mounts. Easy transportation of optics and rifle separately is only an additional bonus.

There are however many different types of repeatable mounts, of which the most common are:

Pivot mounts,
Weaver/Picatinny repeatable mounts,
Repeatable mounts on brand specific mounting solutions: Blaser Saddle mount, Merkel Suhl Tilt-Up mounts, Sauer 404, Sauer 303 , CZ 550, Mauser M03, Steyr original pivot mount, Merkel original pivot mount,

Dentler basis mounts,
Contessa 12 mm mounts.

There are also many other similar repeating mounts.

Repeatable Mounts | Optics Trade Debates

Direct Mounts

Introduction

PROS

CONS

Is lapping needed with Direct mounts?

Conclusion

Rusan Roll-off Mount, 30mm, Brno ZH / Super Brno

Rusan Roll-off Mount, 30mm, Sabatti, FAIR, Bettinsoli, Marocchi

Rusan Roll-off Mount, 30mm, Antonio Zoli

Rusan Roll-off Mount, 30mm, CZ 584 / Tatra

Rusan Roll-off Mount, 25.4mm, Antonio Zoli

Rusan Roll-off Mount, 25.4mm, Brno ZH / Super Brno

Rusan Roll-off Mount, 25.4mm, Sabatti, FAIR, Bettinsoli, Marocchi

VIDEO

Payment methods

Shipping methods

Shopping

Contact us

Certificates

Follow us on

FAQ and Media

Direct Mounts

Introduction

PROS

CONS

Is lapping needed with Direct mounts?

Conclusion

VIDEO

Your wishlist