GrovTec US Inc GTSW298 Mag Cap Set Shotgun 1" Push Button Black Oxide Moss 590/835 12 Gauge Steel Bore Sighters and Arbors the DG grip switch uses

the DG grip switch uses a minimal center-mounted pad

5mm stereo input jack and patch cable works with most smart devices

Single point clamp attachment will fit AR style single point yoke rings

It can be installed horizontally or vertically in a bench vise

while the double-reed system provides resonance

GrovTec US Inc GTSW298 Mag Cap Set Shotgun 1" Push Button Black Oxide Moss 590/835 12 Gauge Steel Bore Sighters and Arbors the DG grip switch usesStandard shotgun cap replaces factory cap and allows the use of GT Push Button swivels, GT Twist Lock swivels or even the GT Multi Adaptor for speed and versatility in the field. Set includes 12 gauge mag cap and standard 1 inch GT Push Button Swivel.