SA M4 / AR15 Complete Metal Receiver (MP129B) – Black

Specna Arms complete M4 / AR15 metal receiver (MP129B) in a black finish with the Specna Arms logo is a complete upper and lower receiver assembly for TM-standard AEG airsoft rifles. It is designed for standard V2 gearboxes without the SAEC™ or ESA™ QSC system and corresponds to the design used in Specna Arms ONE™. It features a functional bolt catch mechanism for hop-up adjustment.

Specna Arms is a brand that has already managed to mark its name in the minds of airsoft enthusiasts as a combination of quality encountered only in high quality replicas with a very reasonable price. Thanks to many years of experience and active participation in the evolution of airsoft combat measures, SA offers products tested in extreme conditions.

A metal receiver manufactured by Specna Arms is characteristic for its quality craftsmanship and durability. At the top is an integrated 22 mm mounting rail. Due to the use of a metal body the gearbox is offered a significantly better protection against damage. In addition, elements such as the charging handle and an operational slide lock noticeably increase the level of realism. The shell ejection window is opened using the charging handle. The receiver is intended for standard gearboxes without SAEC system. 

The body does not fit replicas equipped with the ESA system – EDGE and CORE.

The set includes:

– receiver with a charging handle and a fire mode selector plate

– magazine release button

– bolt catch

– pins