Wisconsin Trigger  Company 5.56 and 7.62 Receiver Saver Hammer Drop Blocks
After installing a few hundred triggers and jumping off the stool using some bad words more then once, we decided to make up some handy thumb and receiver saving blocks. Now you have no reason to use your thumb as a trigger stop.  The Receiver Saver is a drop-in block that will help you get the feel and pull weight when installing and tuning your trigger, without the danger of cracking your lower receiver. The block is made of a shock-absorbing plastic. When in place the block prevents the hammer from striking the wall of the magazine well. The Receiver Saver fits into the magazine well with the upper receiver open or removed and locks in place with the mag release catch. The top is serrated so you can hold it in a receiver that is not fully assembled. Designed to withstand thousands of hammer strikes and is covered by the Wisconsin Trigger Company Transferable Lifetime Guarantee.  Available at The Wisconsin Trigger Company website they come in two sizes Part number 55611701 for 5.56 magazine guns and  7.62 mag wells use part number 76211702.

I'm sorry for the delay and poor timing. I have been fighting with our website trying to get a coupon box on the check out page to no avail. So this is the only way I could do this at this time.  If you check The Wisconsin Trigger Industry forum here at AR15.com. We posted a special offer for a set of our Receiver saver blocks.

We sure do.  Stop in any time.