AR-15 Flat Top Upper Receiver

The MUR-1A, Modular Upper Receiver is a rigid Mil Spec AR-15 Flat Top Upper Receiver made to be used AR-15 carbines and rifles. The receiver is designed to give the customer a thicker wall to operate making the receiver the best platform.  The rigid upper receiver increases the reliability and accuracy while extending the interfacing components life like barrel assembly and carrier group.

The AR-15 Flat Top Upper Receiver has two models. The shell deflector and bolt assist or with second shell deflector only. You can make the choice when you go to buy the part. The top receiver is made with 7075 aircraft grade aluminum using forging process. Before machining, forging uses stress relieve and it undergoes in the proprietary cryogenic treatment while it is heat treated. The device is machined with precision and every part of the program is finished using the hand. You may not be able to get a better receiver than this. The best part about the part is that it has to be dimensionally correct. The AR-15 Flat Top Upper Receiver offers accuracy and reliability because of the production process used. The device has to undergo quality control and final check which insures that it is 100 percent accurate and safe.

The latest top upper receiver is made from 7075 aircraft aluminum forging and it is has to pass through forging which is stress relieved. You have to make sure that the receiver you are using is compatible with your carbine or rifles. The receiver can weigh at least 10 oz. and sometime you can find the receiver that weights only 8 oz.

Finish and color of the AR-15 Flat Top Upper Receiver is black matte which has anti glare and anti reflections. The hard coat is anodized and the bore’s surface is coated with the dry film lube of over the anodized surface. The special features include the improved strength over the conventional forged flat top on the upper receiver. The receiver is stronger compared to the billet and it has similar material and dimensional characteristics. It has tighter manufacturing tolerances compared to other competing process.

The AR-15 Flat Top Upper Receiver can be found with forward assist and ejection port cover that has been already installed.  The precision that has been machined using 7075 T6 alloy from aluminum have already the mate together with mil-spec internal and lower internal components for your choice.

The AR-15 Flat Top Upper Receiver is anodized so that it can resist the wear while adding the strength and protecting against the corrosion. The hard dry lube surface protect an anodized  scuffs which reduces the friction in the receiver walls and bolt carrier to give ultra smooth operation with longer services life and less wear.  The AR-15 Flat Top Upper Receiver has a low profile with the slick side design does not have deflector, ejection and forward assist door. If the receiver is stripped up, it means that it does not have the internal parts.

Find more information relating to M16 Bolt and Carrier Group, and WMD Guns Bolt and Carrier Group here.