Cross Armory Double Stack for Magpul PMAG Gen 3 Aluminum Hard Black Anodized Black Small 10RD. EXTREMELY FAST RELOAD TIME When reloading flip the MAGAZINE COUPLER upside down and insert the opposite side that holds the additional full magazine. Swapping out mags just became a breeze. Many States have implemented restricted round magazine laws; whether its 5 10 or 15 rounds there is little purpose other than to frustrate the user and send him or her back to the loading bench. MAGAZINE COUPLER connects two separate magazines with a patented locking key guaranteed not to fail. In the states that do not have restricted magazine laws this is the most efficient and cost effective way to combine two 30round magazines to give you 60 rounds of capacity MAGAZINE COUPLER has been engineered and field tested to keep your gun balanced even with a second magazine attached and to affect a lower center of gravity that helps you stay on target. Although designed to help gun owners in restricted round states MAGAZINE COUPLER will work with any capacity and any caliber magazine type. Whether youre protecting your family and property or just at the range more rounds in your hand is always better. Product patented and trademarked. Specifications for Cross Armory Double Stack Magazine Floor Plates: Manufacturer: Cross Armory Finish: Hard Black Anodized Fabric/Material: Aluminum Color: Black Quantity: 1 Features of Cross Armory Double Stack Magazine Floor Plates Combines two AR-15 10 round Magpul PMAGs When 2 10 round magazines are coupled total size is the same as a 30 round magazine Fits any AR-15 100percent legal (in restricted states that have 10 round magazine limits ie CA) CNC machined from billet lightweight 7075-T6 aircraft aluminum Can also be used as weighted base plate to help mags drop freely for faster reloads Fits 30 round P-Mag also To give you 60 rounds of capacity Package Contents: Cross Armory Double Stack Magazine Floor Plates What firearm models does the manufacturer say Cross Armory Double Stack Magazine Floor Plates is compatible with? The manufacturer says that Cross Armory Double Stack Magazine Floor Plates is compatible with AR-15 CZ 75 Beretta 92 SIG Sauer P226 Glock 19 Glock 23 Glock 31 Glock 32 Glock 17 Glock 22 Smith & Wesson M&P ShieldCross Armory crDSPM10G3-10RD: Double Stack for Magpul PMAG Gen 3 Aluminum Hard Black Anodized Black Small