Just waiting for the buttstock to arrive and fit it after that bluing of the underframe and then the range test.
There is absolutely no alteration to the receiver or any other part of the firearm. It is fully reversible to the original in about 30 sec. The muzzle brake extension has 16x1 LH thread.
The harderst part was not the underframe but the lower handguard ( the upper is original).
There is absolutely no alteration to the receiver or any other part of the firearm. It is fully reversible to the original in about 30 sec. The muzzle brake extension has 16x1 LH thread.
The harderst part was not the underframe but the lower handguard ( the upper is original).

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