Product Reviews for MAR4S/2 - AR-15 Quad Rail Handguard Carbine Length Drop In Black Great Handguard!!! by jj69 (2023-01-19 20:47:59) Rating: 5 / 5 - 5 - Excellent Owned Product for: more than 1 year Pros: This handguard had easy installation, I love it! This item fit perfect on my Ruger AR556 Cons: Other thoughts: