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Geissele Automatics 05314 Reaction Block Black Steel AR15/M4/M16

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1.61 LBS
Frequently bought together:


The geissele reaction block is designed to aid in the assembly of lower receivers.Once the armorer has installed the buffer tube, the lower receiver can then be slid into the reaction block at the 12, 3, 6 and 9 oclock positions.This allows the armorer to rotate the lower receiver by 90 increments in the block simply by loosening the provided nylon screws, removing the lower receiver and sliding it back in at its desired orientation.The reaction block provides an ultra-stable platform for performing an array of lower receiver operations as well as making the installation of the buffer retainer nut quick and easy.This is all possible while keeping both hands of the armorer free to work, saving both time and frustration.

Type: Reaction Block
Blade Type: Steel
Handle Description: AR-Style Rifles
Weight: AR-15
Sharpener Type: 1

WARNING This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to You must be 18+ years old to shop and or purchase on our website and 21+ to purchase Ammunition/Firearms. Check local laws before ordering as you certify you are of legal age and satisfy all federal, state, and local legal/regulatory requirements. There are NO returns or exchanges on armor, firearms, ammunition, PPE equipment. Ammo ships UPS ground to the lower 48 states.
We reserve the right to fix any critical errors.

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