LIMITED Capacity 10 round AR-15/M4 Magazines. 10 rounds, *cringe*, so other examples included.

SHOW AND TELL : LIMITED Capacity 10 round AR-15/M4 Magazines.
There are many other brands, these are just some examples.
ASC (AMMUNITION STORAGE COMPONENTS) 7.62X39mm,
MAGPUL GEN M3 5.56x45mm,
Midwest Industries .223/5.56x45mm,
MOSSBERG MVP Predator 5.56x45mm,
PRECISION REFLEX 6.8 REM SPC (6.8 SPC)