Forward Controls Design Benelli M4 Charging Handle Black CH Benelli M4. The factory Benelli M4 charging handle is small in diameter and combined with the grooves designed to increase traction are rather uncomfortable to use. CH Benelli M4 is machined from a single piece of 17-4 stainless steel heat treated to H900 and nitride treated it incorporates the classic short spindle shaped handle that's been use on numerous firearms successfully in the last few decades Sten Gun and metric pattern FAL are two of such examples. The hour glass shape is a simple and very effective design that retains and auto centers the user's fingers to the point serrations on the handle are not needed thus CH BNL M4 doesn't have any. CH Benelli M4 is a bit shorter (factory: 1.96in CH Benelli M4: 1.93in). The larger diameter which makes CH Benelli M4 more user friendly does make it heavier (factory: 0.42oz CH Benelli M4: 0.57oz) the tradeoff is the solid one piece CH BNL M4 is far more comfortable and intuitive to use a more than acceptable tradeoff for a heavy duty charging handle. There are small details that have been incorporated into the CH Benelli M4 design: the spindle or hour glass shaped handle has two flaring the outside flaring is larger than the inside. Together the shape automatically centers the user's fingers and keep them from slipping the outer flaring is larger since it's the area that inhibit off axis movement if the user's fingers do slip. All of the corners have been beveled our hands will find any crease or angles quickly as they create discomfort. CH Benelli M4 's handle feels silky smooth but the spindle / hourglass shape works so well it needs no serrations to create traction. Compatible with Benelli M4. While a Benelli M1 charging handle can work on an M4 the reverse isn't always true do not use CH Benelli M4 on Benelli M1 shotguns. Specifications for Forward Controls Design Benelli M4 Charging Handle: Manufacturer: Forward Controls Design Fabric/Material: 17-4 Stainless Steel Color: Black Finish: Heat Treated Gun Make: Benelli Gun Model: Benelli M4 Weight: 0.57 oz Length: 1.93 in Package Contents: Forward Controls Design Benelli M4 Charging Handle What firearm models does the manufacturer say Forward Controls Design Benelli M4 Charging Handle is compatible with? The manufacturer suggests that Forward Controls Design Benelli M4 Charging Handle is compatible with Benelli M4Forward Controls Design CH Benelli M4: Benelli M4 Charging Handle Black