From NATO membership, the most that would benefit in the security field would be Sweden and Finland. But even the Alliance will have a not-so-small benefit.
Apart from the troops and territory where it expands, making the Baltic virtually a safe zone, NATO would add a new non-negligent combat set to its arsenal.
Both Sweden and Finland have a range of domestic armaments, which, by quality and standards, meet and exceed NATO's.
But what would NATO benefit?
First, the Swedish Archer artillery system. It is quite practical, accurate and extremely manoeuvrable in difficult terrain. This system can be ready to open fire within 30 seconds.

Light artillery 95S58-61. It was first produced in Finland in the 1950s. It is currently the most advanced version and able to drill each tank with its own shell. The power of the shell fired from this artillery shoves up to 50 centimetres into the armoured part.

Patria AMV is another Finnish side that will join NATO. It is rated as one of the best means for military transport, but also has the ability to turn into a military platform, including weapons controlled remotely.

AMOS is a Finnish-Swedish automated mortar thrower system. The whole process is automatic and with it activated, artillery is able to release up to 10 mortar shells at once.

155GH52 APU is the heaviest Finnish artillery with 155 millimetre shells. This is the maximum size of shells with man-made manual fillings.

The BVS10 is a Swedish-British autoblind suitable for any terrain, especially for muddy and snowy environments, which are inconsequential for most combat vehicles.

Tank 90 is the Swedish tank that is known for its ability to disable amortizers on straight terrain, or roads. This enables it to capture a higher speed and adjustment according to the terrain.
