3 pcs set of heavy duty blocks securely clamp all flat top and carry handle AR-15/M16 upper and lower receiver components to prevent damage or movement during repair, assembly and cleaning. Constructed of impact resistant glass filled nylon.
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I havent had time to use it yet but it looks great to me !
Item arrived on time as promised! Seems very sturdy. Can't wait to use it
Terrible construction. Broke the first time I used it.