Verified answer

I have had a Mini for several years now... so far I have not needed anything but ammo and time to shoot it.

Your milage may vary

thats like asking if woodchucks chuck wood............. they do........... but range of the wood may vary. the spring may work but .223 isnt going to kick like a red bull in the rodeo. i shot m16 and i can do full auto without too much trouble. so dont buy the spring. get some red bull instead

Well of course you need this because everyone knows Ruger does such a poor job of engineering their guns.