From Maxim defense comes this high quality 300 Blackout complete upper assembly for your AR-15 lower. Complete with Maxim Bolt Carrier Group and charging handle. The HK height M-LOK rail is ideal to mount picatinny compatible sights and accessories. Barrel is 5.5″ long and threaded 5/8×24 with the Maxim HATEBRAKE already installed under the Maxim handguard. This high end hardware is just what you have been looking for to build your own 300 BLK pistol or SBR.
- 300 AAC Blackout
- M-slot compatible handguard
- Military grade materials [6Al-4V Titanium, 17-4 Stainless Steel, 7075 and 6061 Aluminum
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