Tacmod AR-15 Complete Buttstock Assembly Black. The TacMod butt stock was designed in conjunction with competition and precision shooters at the US Army Marksmanship Unit. It features a fully-adjustable Kydex comb allowing for a perfect repeatable cheek placement with iron sights and optics of any height. The stock is also fully adjustable for length of pull and features cant adjustment for the included Limbsaver recoil pad to achieve the ultimate fit to YOUR shooting style. Additionally the TacMod butt stock is provisioned for QD sling swivels (left and right) and a 3'' picatinny rail (sold separately) for mono-pod attachment along its sand-sock rest. The TacMod Buttstock weighs in at only 29.2 ounces which provides the perfect balance to your AR15 platform. The Tacmod Butt Stock includeshigh-quality proprietary buffer tube. The buffer tube accepts the standard size Carbine buffer buffer spring and ar15 receiver plate which are not included with purchase. If you would like to switch-out the Limbsaver recoil pad to another style of your preference it is installed with two -28 button head screws. It can be removed with a 5/32 Allen wrench. Specifications for Tacmod AR-15 Complete Collapsible AR Buttstock: Manufacturer: Tacmod Color: Black Gun Model: AR-15 Gun Type: Rifle Condition: New Fabric/Material: Steel Finish: Matte Package Contents: Tacmod AR-15 Complete Collapsible AR Buttstock What firearm models does the manufacturer say Tacmod AR-15 Complete Collapsible AR Buttstock is compatible with? The manufacturer says that Tacmod AR-15 Complete Collapsible AR Buttstock is compatible with AR-15Tacmod 770202: AR-15 Complete Buttstock Assembly Black