F5 MFG

selling a defective item, then not replying to contact form. bad product. bad customer service.

I had no problem with the service or shipping. I received it quick enough. The product was just junk.

Your company sucks. Never purchasing from you again.

F5 MFG does not correspond to customer inquiries post sale/transaction date! Product arrived 42 days after original purchase!

4 Major issues with product. 1st, The "Barrel/Gas Port" Does not have anything for the BCG to engage to hold the bolt carrier into battery. 2nd, The Chamber does not fully seat a standard mill spec m200 blank. The brass casing is not fully supported and will rupture if fired. 3rd, the upper receiver is not fully machined to accept a charge handle. And lastly, The upper receiver mounting pin holes are offset and not inline with the mounting on a standard mil spec lower receiver. There is no way this product can be fired and if it did it would rupture a casing and potentially damage the BCG.