Dezmick,
Few thoughts before you drop your $$ for any case.
1. What is intended purpose of the case, e.g. storage, transport...?
If it is storage, then any old case that fits will work. if storage and transport then make sure your case is made with quality material -- zippers, zipper pulls, lockable, etc... ( I've use the cheap cases and I ended up buying twice!) Does the weapon slide in or does the case open all the way around the case -- the can make a big difference depending how often you take the weapon out.
2. Are you casing just the weapon or other stuff?
Some cases hold just the weapon zero room for mags, tools, grips, slings, cleaning stuff, etc. Other cases will have pockets for mags, the case will fit a weapon with sights, grips, lights, etc.
3. How discreet do you want the case? Does it look like a gun case or a instrument case?
This is important depended where you live and shoot. A discreet case does not raise any eye brows when carrying the weapon from home to vehicle to range or gun shops. while a traditional case that outlines a weapon is not very discreet.
4. Do you want a hard shell or soft side case?
This may seem trivial, but again it goes with the intended purpose of the case. I use both. I use hard shelled cases w/foam egg shell padding when I'm elk hunting...don't have to worry during travel and they stay put tied to an ATV. They weigh more than a soft sided case, but they really protect the weapon (some are even water proof). Soft sided cases are light and flexible for carrying around.
For my ARs I use the Blackhawk Discreet Weapons Cases - 40". The weapon compartment has a double zipper pull to open the case flat. It is large enough for a collapsed AR w/ optics, attached grip pod, the two inch heavy duty Velcro straps can be moved around to to get the best hold on the weapon. Plenty of room for my sling, gloves, or other soft gear(light jacket and cap). The outside compartment is Velcro lined and comes a three magazine pouch panel ( will hold six 15-22 25rd mags), room for 10 rd mags (you can very have too many magazines), shooting glasses, hearing pro., small tools, rags, cleaning supplies, and my Hoppe's Bore Snake.
No logo patches / logos ..just a plain black case with a shoulder strap.
JMO,
tat