For a basic it you really only need a decent pull through with 30 cal brushes and eyelet, patches, and cleaner. I have an old Otis kit I adapter to my all purpose kit. Something like that.

https://www.amazon.com/Flexible-Threaded-Cleaning-Coated-Zippered/dp/B07GYKRYHZ/ref=mp_s_a_1_5?crid=24I2XGSVGKAHA&keywords=rifle+pull+through&qid=1678583684&sprefix=rifle+pull+through%2Caps%2C191&sr=8-5

Then if you don’t have them buy a 30 cal brush and eyelet. Should be able to do it for about $15 or maybe less. Unless you want to be a little fancy.

https://www.amazon.com/Otis-Technologies-FG-701-30-Patriot-Rifle-30/dp/B01DL971VC/ref=mp_s_a_1_7?crid=1YHRATXGG39CK&keywords=30+cal+rifle+pull+through&qid=1678583853&sprefix=30+cal+rifle+pull+through%2Caps%2C166&sr=8-7