The drive apparatus can be modified, with {TAIL ~ the addition} of {HEAD ~ a gear} and chain, to reset or activate steel or other reactive targets 
The drive apparatus can be modified , with { TAIL ~ the addition } of { HEAD ~ a gear } and chain , to reset or activate steel or other reactive targets
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH