Any one have a 6.8 spc magazine they could recomend. I curremtly have yhm 6.8 i assembled with a yhm 16" barrel and handguard. It will not feed with less than 5 rounds in the magazine. I assume its the magazine spring, but im looking for something more reliable. The current mag is ar stoner. I have loaded it with factory ammo and handloads that are much less than mag length.