Battery Assist Device is new and still in the packaging.
"Allows for manipulation of the AR15/M16 bolt release using the trigger finger, without requiring the shooter to remove their weapon hand from fire control..."
-Made from Milspec-anodized aluminum
-Requires NO gunsmithing or permanent modification
These little levers are pretty popular right now if you have an AR pattern rifle and normally retail for around $30. They are a simple and cost effective upgrade for your AR pattern rifle. OR, if you really want to add a unique mod to your M4/M16 AEG for added realism.
I'm asking $20 Cash, just simple crisp bill.
Send me a PM if you are interested.