BLACKHAWK! SPECOPS NRS SHOTGUN STOCK - Manual (Page 3)

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BLACKHAWK! ® NORFOLK, VA U.S.A. 1.800.694.5263
Page 2
2. Prepare SpecOps NRS for installation by removing rear butt stock from SpecOps NRS.
To remove pull down on lever assembly and slide off buttstock. (Fig. 2)
Note: For Mossberg SpecOps NRS only, remove rubber o-ring from stock bolt. Remove o-ring by in-
serting ball end allen wrench into hole located on the bottom of the SpecOps NRS. Turn wrench
counter clockwise while applying pressure to the bolt with finger. Turn wrench until rubber o-ring
is removed.
3. To begin installation attach the SpecOps NRS to the shotgun by aligning pistol grip with the rear
of the shotgun receiver. Insert ball end allen wrench into the hole located on the bottom of the
SpecOps NRS (Fig. 3) and firmly tighten the pre-installed Hex head bolt and washers. Make sure
that the stock is properly aligned and square with the receiver. (Be careful not to strip or cross
thread mounting bolt or receiver nut).
Note: For Mossberg SpecOps NRS, there should not be a gap between stock and shotgun after
installation. Continue to tighten bolt until gap is closed.
Fig. 2
Fig. 3
Note: If the stock is loose or if there is a significant gap between the stock and receiver after
completely tightening the bolt, then two issues may exist. Issue 1; the bolt has been cross
threaded into the receiver nut. Issue 2; there is debris (powder residue or old thread locking
compound) in the receiver nut that is not allowing the stock bolt to fully engage with all the
receiver nut threads. To clean receiver nut threads, take a small diameter barrel brush (Approx
1/4” dia.) and insert repeatedly into receiver nut until excess material has been removed.
Re-install stock.