O fakos FAST 401 ejairetika ychlhs apodoshs einai ena bohuhma toso gia ta mikra oso gia gia ta opla plhroys megeuoys.
Einai sxediasmenos na megistopoiei thn oratothta kai th dynatothta stoxeyshs megalhs embeleias se mia poikilia epixeirhsiakvn efarmogvn:
Strativtikh, Epixeirhsiakh, sta Svmata Asfaleias k.a.
Oi xrhstes mporoyn na epvfelhuoyn apo to stoxeymeno entono fvs vs amyntikh leitoyrgia. 
O fakos FAST401 mporei na topouethuei se ena pistoli, etsi vste oi xrhstes na mporoyn na entopisoyn pio eykola mia piuanh apeilh protoy proboyn se opoiadhpote energeia.

Xarakthristika
- Ena ejairetiko LED CREE XM-L2 (U3) prosferei megisth apodosh 800 lumens
- Eyreia, apo akrh se akrh fvteinh desmh.
- Diauetei megisth entash desmhs 16.400 cd kai apostash desmhs evs 256 metra
- Epixeirhsiaka sxediasmenos patentarismenos diakopths energopoihshs, gia amfidromh leitoyrgia stigmiaioy / staueroy diakopth on / off
- Trofodosia apo dyo mpataries iontvn liuioy 3,7 volt 16340/3 volt CR123A
- To ejairetika apodotiko kyklvma prosferei evs kai 1,25 vres xrhshs sth xamhlh entash
- To systhma sfigkthra labhs sidhrotroxias proskollatai / apokollatai grhgora kai me asfaleia xvris ergaleia, ikanopoiei sklhres epixeirhsiakes anagkes
- Topoueteitai apeyueias se pistolia me rages typoy Glock kai se oles tis rages MIL-STD-1913 (Picatinny).
- Kataskeyasmenos apo anojeidvto krama aloyminioy baumoy 6061-T6 me sklhro anodivmeno finirisma strativtikhs poiothtas HAIII
- Sklhrymeno ejairetika diayges gyali oryktvn me anti-xaraktikh epistrvsh.
- Anuektiko sth skonh kai to nero symfvna me to protypo IP67 (byuismeno dyo metra)
- Anuektiko stis ptvseis evs kai apo 1,5 metro ycos.

Diastaseis
- Mhkos: 3,60 intses
- Diametros stefanhs: 1,16 intses
- Baros: 3,0 oygkies (xvris mpataria)

Ajesoyar
- Antallaktiko polymeriko "stop"  ragas