@Johny_Baba I'm just ending what you had started. Feel free to correct me.
So few facts.
1. Almost all the stocks used on SSS's sniper rifles are either straight from a Canadian/US company named MDT (Modular Driven Technologies) or are just their knockoffs. Especially ESS, LSS and ACC stocks of MDT.
2. Actions on sniper rifles are probably one of the typical Remington 700 pattern bolt actions, plethora of which are available in US. Also is uses the common AICS magazine.
3. Same goes with trigger. Typical aftermarket trigger for Remingtons.
4. Pistol grip used on sniper rifles and all of the P-72s are also from a US company; and surprisingly its name is MDT.
5. As you mentioned, all the AK modification are actually from Texas Weapon Systems, their Dog Leg series.
6. The pistol grip used on the modified AKs is from Hogue. Again USA.
7. The folding stock in the modified AKs is in fact a Viper MOD-1, made by Strike Industries, USA.
8. The folding hinge system used on modified AKs is either the one made by Sylvan Arms, USA or it's knockoff.
All the claims of in-house development and having IPRs are more or less just bluffs. They are doing what our OFBs have done since their inception; copying and labelling StAtE oF tHe ArT. The only difference is that OFB can't even do that properly.
Problem here is not that they are copying foreign design or working in joint venture. The problem here is that they are just using our emotions and enthusiasm of indigenous stuff and #aatmanirbharbharat for their marketing. Not to mention the lack of worthy competition and level of firearm related knowledge in general populace.
So ya, cheetos.