Sabre 10 questions

Hello, hopefully someone can help me on this, tried to look for someone to email on the PSA’s website but was not able to find anyone.

I want to know what is the difference between SKU:  51655139817 vs. SKU: 51655139815.

Other than 51655139815 come with BI-POD, 3 MAGS, SABRE BAG, and in FDE.  In other words, I want to confirm the two rifes listed above are essentially the same but in different colors.

Also, the description on sku  51655139817’s page listed the buffer system as an “Sabre S5”,  I am wondering whether this was an error, since it came with an A1 stock, one would assume it should come with a rifle length tube.

thanks in advance!

ps.. links to the rifles

51655139817

https://palmettostatearmory.com/psa-sabre-10-forged-20-308-rifle-with-12-5-quad-rail-and-a1-stock-black.html

51655139815

https://palmettostatearmory.com/psa-sabre-10-forged-20-308-rifle-with-12-5-quad-rail-a1-stock-magpul-bi-pod-3-mags-and-sabre-bag-fde.html