1. Weta efere chamfered nke nwere radius dị n'ime na n'èzí n'ime ụdị S ọkachamara
2. Mkpọchi ahụ na-achịkọta mpempe akwụkwọ maka akụkụ dị n'ime
3. Ihe mgbada ahụ na-agbasa mpempe akwụkwọ maka mgbada mpụta
| Ụdị nlereanya | SS-18 | SS-18FD | SS-16F | FSM-16 |
| Ike | 1.2mm | 1.2mm | 1.5mm | 1.5mm |
| Omimi akpịrị | 25.4mm | 25.4 | 208mm | 152mm |
| Nha ngwugwu | 46x20x13cm | |||
| NW/GW | 5.5/5.8kg |