AIM Sports 6.5-Inch M4A1 Carbine Length Drop-In Quad Rail - TAN

The AIM Tactical Drop-in M4 carbine length accessory quad rail is one of the most affordable and easiest upgrades for your M4 length Airsoft AEG rifle. This durable and lightweight rail

Handguards and Rail Systems

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Aim Sports M4 2-Piece Quad Rail Drop-in Handguard, Anodized Black - MT021

Aim Sports M4 2-Piece Quad Rail Drop-in Handguard, Anodized Black - MT021

Parts or Accessories

Matrix IMF MC65 Series M4 Gas Blowback Airsoft Rifle by Golden Eagle (Model: 12.5 M-LOK / Black), Airsoft Guns, Gas Blowback Rifles - Airsoft Superstore

Aim Sports Aluminum Carbine Length Quad Rail w/ Covers, Anodized Black - MT041

AIM Sports M4A1 Carbine Length Drop-In Full Metal Quad Rail 6.5in

AR 15 Parts Explained: The Beginners Walk Thru - Black Rifle Depot