Lee, a Blackwater armorer, emailed me some info on the BW15:
1.Yes we do offer the BW15 in more than just 5.56mm. As of now we are making them in 6.8mm and 7.62x39mm as well. The BW15 lower receivers are stamped Multi-cal.
2.We are using out own receivers and each weapon is a matched upper and Lower receiver. All of the serial numbers begin BW.
3. As far the weapons shooting MOA, we use only the best barrels and the Armorer that builds the weapons also test fires it. I do believe that if we say that it will shoot MOA it will. But on the other hand what if the customer can’t shoot that well. Are we to take the weapon back? In case you did not know, everyone is an expert when to shooting.
4. Barrel lengths start at 16″. You can request a 14.5 with a pinned and permanently affixed flash hider to make total length overall 16″. We can have a custom barrel made to your specs (will take extra time POR). However if a customer wants a 18″- 26″ barrel we can accommodate.
5. All weapons have standard anodized finish. We are not doing any coatings at this time.
6. All weapons are shipped with 2 Magpul 30 round magazines and a lock.