These base pads are designed for 2011 magazines to fit into the IPSC Standard Division measuring box.
They will, most certainly, be too long for the 140mm USPSA gauge when attached on 140mm STI tubes.
The DAA Aluminum Standard Base Pads are made of top quality aluminum, precision-machined to the tightest tolerances and hard anodized for extra strength and striking good looks. They fit snugly onto STI/SV/Para/Bul tubes, allowing just a little bit of that required ”wiggle”. Spring tension is enough to keep the pad in place; however, a self-locking set-screw has been added for extra insurance.
The pad is hollowed out, leaving just the absolute minimum thickness to ensure strength and durability. Radiuses have been added to improve inner strength, and side walls have been thickened to further strengthen the grooves where the base attaches to the tube. In fact – these bases are so strong, we are offering a “No Nonsense” 5 year warranty!
SV Shooters, please note: The Standard magwell provided by SV is very narrow on the inside, and you will have to slightly modify either our base pads or the magwell to allow them to lock up in the gun. You will have to remove a little material for the top edges of the base pads, or widen the magwell.