they're more or less both exactly the same thing. BMP or special weapons or cohaire or tactical arms or what ever company Todd Bailey has decided to sell his products from this week manufactured the .40 caliber receivers and parts kits for Vector Arms under a marking varience when vector was first in the HK clone buis.
ALOT of barreled .40 cal VECTOR receivers you see for sale online were made from a parts kits BMP/SW was selling a while back and is most likely built by a home builder who is looking to unload a bad project on someone else. some were sold by special weapons as barreled uppers. its kind of a crap shoot on exactly who built the gun. even the best builders have problems making those crap parts kits work right out of the box without replaceing or drasticly fixing most of the parts in them.
if your not looking for a complete gun right off that bat that was built by an experienced builder i would reccomend starting with a NEW SW receiver and sourcing all of the parts separately either German ones or parts from KNOWN good companys then have a reputable builder put it together. you'll be much happier with the results.
ALOT of barreled .40 cal VECTOR receivers you see for sale online were made from a parts kits BMP/SW was selling a while back and is most likely built by a home builder who is looking to unload a bad project on someone else. some were sold by special weapons as barreled uppers. its kind of a crap shoot on exactly who built the gun. even the best builders have problems making those crap parts kits work right out of the box without replaceing or drasticly fixing most of the parts in them.
if your not looking for a complete gun right off that bat that was built by an experienced builder i would reccomend starting with a NEW SW receiver and sourcing all of the parts separately either German ones or parts from KNOWN good companys then have a reputable builder put it together. you'll be much happier with the results.