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Gary B. asked 8 years ago:
2 answers
Mako M4 Folding Stock Mossberg 500 590
It is not legal to add to a Shockwave Gary. You would need to apply for a NFA Tax Stamp and register as a "SBS" Short Barreled Shotgun with the addition of any shoulder stock.
James G.
8 years ago
do not change anything on the shockwave you will make it a ILLEGAL NFA item
Randy I.
8 years ago
