PS90 case was easily modified to internally support a 12" AR57 Pistol by using only velcro straps. The original case was not in any way permanently modified, cut, or damaged. Four internal PS90/AR57 magazine holder are perfect. Case is extremely discrete.
Pros: Perfect size and fit
Cons: costly but not many good options for AR57 pistol exist.
This review was written in the old system and had content requirements that are different than reviews written today.