Fits excellent on ruger ar-556 - Pro Mag AR-15/M4 Polymer Quad Rail Carbine Handguard PM242

This hand guard fits exceptionally well on my Ruger AR-556. The 2 piece drop-in construction makes it easy to install just by placing the front portion into the circular end cap and then popping the base into place in front of the Delta ring. The double heat shield does an amazing job to protect your hand from the built up heat derived from all of the rounds you may be popping off. There is no wobble or shifting of the guard even after shooting hundreds of rounds. I would definitely recommend getting this product if you are looking for a well built but affordable hand guard to add to your rifle.