I picked up a BlackHawk Discreet Weapons Case 35in for M-1 for my HK94. I have a HK94 with an A3 stock. The case has sturdy 1/4" padding around all the edges, has two lines of molle webbing in the gun section with two heavy duty velcro tie downs, has a separate compartment for ammo/accessories, and comes with a heavy duty compartment containing 4 M-4 pouches that are more than big enough to carry curved mags. The mag pouch is attached via a butt load of velcro and can be shifted to your desired position. I wanted to carry my HK with the stock extended so I went for the longer 35 in case. However, the 29in version of the case should work for you. Here's the blackhawk page:
BLACKHAWK! Homeland Security Discreet Weapons Carry Case - BLACKHAWK!
The case is discreet, sturdy, functional and worth the money. I'm happy with mine.