The Trigger Fire, Sample Gun, Re-Designed With A New Look & Heavy Duty, All Steel Construction, Achieve Easy, Accurate,Flush Stapling With 1 Hand, Can Be Used In Both Trigger & Normal Modes, In Trigger Mode, Simply Squeeze The Handle To Load The Staple Gun, Position The Tool On The Work Surface & Then Squeeze The Handle To Set The Staple With Ease & Precision, In Normal Mode, Functions As A Traditional Staple Gun When The Trigger Feature Is Not Necessary Or Needed, Uses Sure Bonder #4 Staples Or Arrow T50 Staples.