I am new to the forms and am looking for any information on the bushmaster carry handle for flat-top Ar-15's. I am buying a Spikes Tactical upper, and am looking for a good carry handle optic for the rail. A buddy of mine has a bushmaster carry handle, he's offering to sell it to me. I am wondering if anyone out there owns or knows of the quality. I'm looking for top quality when it comes to a product like this.