This heavy-duty lower receiver vise block makes assembling your rifle easier, enabling you to safely place it in a vise without distorting or damaging your lower receiver. Fits tightly into most lower receivers, some might require slight filing of the block. Has a provision for the magazine catch for additional retention. Place the other end in a vise and make your assembly hassle-free.
Are you also buying a Gas Block Genie? Instead of adding this to your cart, add this product in a bundle from the Gas Block Genie product page (HERE) for 15% off!
Seems to work well