Originally Posted by okdonk
It's where the ak cleaning kit kept inside.
My yugo sks has one too, your brush, jag, an adapter all fit inside a pill shape metal container about 3" long. It pops in, the spring presses it against the back of the trap door. It must be missing from your ak.
Century Arms AR-15A2, 5.56
1946 Mosin-Nagant M44, 7.62x54R
1978 YUGO SKS, 7.62x39
NEF Protector Pump, 12 gauge
Savage Model 64, .22LR
NEF Pardner Tracker II, 12 gauge
Rock Island Armory 1911A1, .45 ACP
Remington 870 'Express Magnum' 12 gauge
Bersa Thunder .380