Milwaukee M12 12V Lithium-ion Cordless 20 oz. Aluminum Barrel Adhesive and Caulk Gun Kit with (1) 1.5Ah Battery & Charger

Item # 203639363 | Milwaukee Part # 2442-21 | UPC Code 045242286331 | UNSPSC Code 27112906
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Product Overview

Milwaukee includes a 12-Volt lithium-ion battery with this cordless sausage-style caulk gun that will easily dispense over 100 10 oz. tubes on a single charge. The extended barrel also accommodates 20 oz. industrial-size tubes, giving professionals unparalleled efficiency and precision for large-scale adhesive and sealant jobs. Battery life is restored in just 30 minutes with the included M12 charger, short enough to re-energize on your lunch break. Apply precise amounts by setting the speed dial and depressing the variable-speed trigger. Dispensing is aided by a rotating collar and drip-resistant auto-reverse stop.

  • Includes: (1) 12-Volt 20 oz. caulk gun, (1) M12 lithium-ion battery and (1) M12 charger
  • Supplies up to 400 lbs. of thrust
  • Aluminum barrel makes tool lightweight
  • Plunger has built-in hook for quick storage
  • Includes seal puncture tool
  • 10 oz. and quart adapters sold separately
  • 5-year limited tool warranty; 2-year limited battery/charger warranty
  • Compatible with all M12 batteries
  • Compatible with all M12 chargers


Battery Amp Hours
1.5 Ah
Battery Power Type
Lithium Ion
Battery Size
Lithium Ion
Certifications and Listings
UL Listed
Cordless Tool Type
Caulk Gun
Cordless/ Corded
Ladder Hook, Seal Puncture Tool, Spout Cutter, Variable Pressure Control
Batteries, Charger
Manufacturer Warranty
5 Year warranty on tool; 2 year warranty on battery
Number of Batteries Included
Power Tool Product Type
Product Depth (in.)
Product Height (in.)
Product Weight (lb.)
Product Width (in.)
Standard Color Family
Tools Product Type
Power Tool


5 Year warranty on tool; 2 year warranty on battery