Assertion: submachine gun's design | /r/HasAspect | their main operating spring
Facets:
value: in a tube in the stock
type: LOCATION
Source sentences:
text: The KAC PDW uses a completely side-folding stock, unlike the M16 and M4 designs which have their main operating spring in a tube in the stock, and therefore can only partially telescope, and not fold sideways at all.