Geissele Magazine Well Reaction Block 02-2781

The Geissele Magazine Well Reaction Block is a precision-engineered armorer's tool designed to securely hold an AR-platform lower receiver in place during trigger group installation, removal, and general lower receiver maintenance and assembly work. Crafted to Geissele's exacting manufacturing standards, this reaction block provides a stable, non-marring platform that protects the finish of your lower receiver while allowing both hands to be free for precise component installation. An essential addition to any serious AR armorer's toolkit, the Geissele Magazine Well Reaction Block simplifies lower receiver work and ensures professional-quality results for both novice builders and experienced gunsmiths alike.