Breakthrough Clean Technologies AR-15 Lower Vise Block

Make building or maintaining your firearms easier with the Breakthrough Clean TechnologiesA(R) AR-15 Pivot Lock. When you insert the block into your rifle's magwell, it provides a snug and secure fit and effortlessly locks into place using the receiver's magazine lock. This block is easily clamped into any vise for convenient and stable cleaning or maintenance, and it features an integrated hammer stop tool to help safeguard the receiver from damage during dry firing. Order now!Note: To engage the gun's magazine lock, either remove the hammer stop or ensure the bolt is locked back. DO NOT close the bolt with the hammer stop inserted in the vise block. This ensures safe & proper use during maintenance.