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I have this B&T stock...
HK MP5 UMP Side Folding Buttstock - BT20155-D S Arms
Seems like it would fit on the HDPS block and give it a shorter LOP. Has anyone tried it? Should I try it?
HK MP5 UMP Side Folding Buttstock - BT20155-D S Arms
Seems like it would fit on the HDPS block and give it a shorter LOP. Has anyone tried it? Should I try it?