Here’s my two cents worth.
For comparison I have an SKS, AK47, and two Mini 14s (substitute Mini 6.8 or 30 for discussion).
SKS ($150 Imported/used): I replaced the wood furniture with TAPCO’s Fusion Stock System. I replaced the bolt assembly dust covered with a UTG Tri-Rail and mounted a UTG 6x32 Illuminated scope ($59). Also mounted is a Harris Bi-Pod. I use ProMag Polymer 20 round detachable magazines.
AK (AK $350 New): I replaced the wood butt stock and pistol grip furniture with TAPCO’s Fusion Stock System. I replaced the wood fore end furniture with a UTG Quad-Rail system and mounted a BSA 1x Red Dot sight. I use ProMag Polymer 30 round detachable magazines.
Mini 14s ($400 $450 used – 198XXX and 580XXX Series) (or 6.8 SPC or Mini 30): I replaced the wood furniture with TAPCO’s Fusion Stock System. I mounted a BSA 1x Red Dot sight on the upper rail and a UTC vertical fore grip on the bottom rail. I used a generic side rail accessory and mounted a NC Star Tactical Light/Laser combo ($59) on that. I use ProMag Polymer 30 round detachable magazines.
TAPCO Fusion Stock Systems will run you between $75 and $115 depending on the platform. ProMag Polymer mags are $15 each at the local gun show. The BSA Red Dot I picked up at Wal Mart for $29.99. The UTG accessories will run you between $20 and $75.
ProMag Polymer mags: I’ve ran several hundred rounds each through these guns and have had ZERO malfunctions. I’ve had no problems with any of the ProMag Polymer mags.
BSA Red Dots: These “cheapy” sights have never failed to hold zero. I have fired all four guns at B29s (targets) from between 25 and 200 yards. I applied 12” dia. “Shoot N See” targets for “center mass” and have yet to be “off target.” I’ve also experienced no overheating problems. I figure that if I can hit a man-size target at 200 yards or less that is also moving and trying to kill me, I’m okay with a 4”, 6”, or 8” MOA. For someone with “old eyes” (me), the results suit me fine. These guns will out shoot me any day. If I should find myself in a SHTF Main Battle Rifle scenario, then I’ll go with either the M1A or FN/FAL. Now we’re talking MOA and accuracy.
For me (with a limited budget), the above combos work for me. I’m happy. In my opinion I was able to take “old” tech and retro fit with “new” tech” and upgrade these guns for the 21st century. I believe that the basic operating systems are sound. I simply “fine tuned” the rest. For between $400 and $650 each I now have four rifles that I have 100% confidence in. And the ammo is still relatively cheap.
I consider the SKS a “Poor Man’s” Main Battle Rifle and the AK and Minis to be carbines. I take those definitions into account when considering Zero and accuracy.
When discussing the Minis I’m not that concerned about 3” or less MOA. Mine are 100% reliable. They are intended as “throw away” home defense weapons to be used under 100 yards; more realistically under 25 yards. If I have to use one in a home defense situation, I would rather LE take a $400 weapon than a $1000 weapon.
I also use the Minis when shooting 3 Gun at the local Rod and Gun club. They run right along with the tricked out $4000 ARs. I’ve never had a malfunction. The same can not be said for some of the more exotic ARs. I have ARs and love them. I just haven’t dropped $3000 into them.
I’m no exxpertt, it is just my humble opinion; as I said before, just my two cents worth.