Small Arms & Tactical Equipment

Companhia Brasileira de Cartuchos (CBC) Brazil, the world’s second-largest ammunition manufacturer is already in India and working with Stumpp Schuele & Somappa India (SSS Defence).

Under the joint venture of CBC and SSS, manufacture ammunition for different calibers like: 9 mm, 7.62×39 mm, 7.62×51 mm, .338 Lapua and 12.7 mm is expected to start soon.

Also, another Brazilian company Taurus Armas S.A. has tied up with Jindal Defence for the manufacturing of small arms.

 
SIG's idea is that the same chamber & bolt should be usable across 7.62x51 NATO and new 6.8x51, requiring only a barrel change to switch.

TFB First Look: SIG Sauer's Next Generation Squad Weapons -

From what I'm seeing, SIG is going all in for maximizing commonality in terms of production (their steel-based hybrid cartridges don't require the kind of changes to existing ammo infrastructure that something like GD's polymer cases or Textron's caseless ammo would necessitate, incurring significant cost-savings).

Plus, their rifle & LMG offers for NGSW appear to incorporate the AR-15/10-style layout for controls (fire selector/safety, mag release, bolt catch, forward assist...everything in more or less the same place you would find them on an M4)...should be pretty straightforward to get used to this for a US service member coming over from an M4 carbine and/or M110 DMR.

And those were likely the reasons that clinched the deal for SIG: