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- Aluminum barrel with steel sleeve (ULTRA LIGHT),
- Barrel has 1×16 twist,
- Upper fits all MIL SPEC style AR-15 lowers,
- Threaded muzzle with removable brake,
- Muzzel thread is 1/2×28,
- MML-520 upper receiver,
- Comes complete with charging handle and bolt carrier group,
- Production model will not have a shell deflector or forward assist.
- 25 rd dog machine Mags