The BAP9 is unquestionably an expensive gun, even by roller-lock standards. The cheapest builds start at $2,999, and with options, it’s possible to approach the $3,500 mark. Whether or not the juice is worth the squeeze is up to readers, but Brethren has definitely introduced some worthwhile, compelling features with the BAP9. The gun is unquestionably reliable and an accurate shooter, and if it fits within your budget, you aren’t likely to find a higher quality MP5 build.
If three grand isn’t quite your speed, Brethren does offer their production line BA9. With the BA, you’ll give up some of the customization options and high-end details, like the weldless finish and Cerakote, but you’ll still be getting a solid MP5 for less than $2,000. To be completely honest, this is the route I would go.
Regardless, if you have a hankering for an MP5 (and who doesn’t?) or even a roller-delayed .300 BLK, be sure to check out Brethren Armament’s growing line of HK-style goodness.