Example from the site listed above. The site also shows a "family tree" style layout of the all the sub units.
Typical Structure of Naval Rifle Brigades
Equipment.................Amount
Manpower..................4500 men
Light Machine-guns........149
Heavy Machine-guns........48
PPSh submachineguns.......612
Antitank rifles...........48
76mm guns.................8
57mm guns.................12
82mm mortars..............16
120mm mortars.............8
Automobiles...............178
Horses....................812
Remarks:
1.Naval rifle brigades were formed by staff of common separate rifle brigade;
2.Up to 50% of manpower consisted of marines;
3.Initially all commanders (including junior leaders) were from seamen;
4.Unlike Marine brigades Naval rifle brigades were formed by military districts, but not by fleets.