Mako Noise and Movement Eliminator for M16/M4/AR-15

Features:

Eliminates gap between upper and lower receiver.
Reduces noise while improving stability.
Cost-effective solution for worn receivers.
Prevents wear to new receivers.

Specifications:

Length: 0.55"
Width: 0.50"
Height: 0.70"
Weight: 0.07 oz
Color: Black