B&T Air APC9K SD2 GBB The APC series of firearms was designed in the 2000s to meet the demands of police units, special forces operators, and national militaries worldwide. The APC9K is currently in use by the US Army, adopted in 2019. This APC9K-SD2 is a replica of the 2019 suppressed submachine gun model featuring an integrated suppressor, shorter barrel, and an M-LOK handguard. Officially licensed with full engraved markings to match the real thing. Features: Fantastic build quality and performance in a compact CQB package. Minimalistic multi position steel telescoping stock w/ rubber buttpad. It offers three lengths to utilize different builds and shooters' preferences. The stock deployment is straightforward and abides by the idea of a compact, concealed-carry submachinegun. For collapsing the stock, a single push-button disengages the safety and allows the element to be slid in. The lower receiver, along with the pistol grip, is injection molded from high-quality polymers. It is fully ambidextrous, with all levers and buttons doubled for both right- and left-handed users. The pistol grip utilizes anti-slip grooves, which offer a comfortable grip in all weather conditions and prevent slippage. The upper receiver, M-LOK handguard, charging handle, Picatinny rail, and bolt receiver are CNC machined from aerospace grade 6061-T6 aluminum alloy. CNC-machined S45C steel internals. Hard-coated in an anodized process for superior protection from field and external conditions. A single long Picatinny rail on top with additional M-LOK slots on the handguard offers ample surface for attaching accessories, like red dots, laser sights, and flashlights. As an officially licensed replica, all factory markings are engraved on both the upper and lower receiver and the magwell. The implemented TDC hop-up system offers precision adjustment of the rubber tension. This translates directly to improved range, accuracy, and stability of the BB mid-air. Ultra durable steel outer barrel with tri-lug flash hider. Pulling back on the bolt feels quite different to a electric rifle with the smooth sliding of metal on metal and an audibly different action that sounds crisper and more realistic. IMI Style flip up sights included. Pistol grip can be swapped with standard GBB M4 / M16 / AR-15 grips. Additional magazines available here. Please Note: These models are built to a tight tolerance and may have some light marks from testing. Not Compatible with Other Brand B&T MP9-style Magazines Specifications Brand: ARCHWICK (Licensed by B&T) Fire modes: Safe / Semi Auto / Full Auto. Power source: Gas. Blowback: Yes. Hop up: Yes - Adjustable. Inner Barrel: 130mm (6.03mm Diameter) Magazine capacity: 30rd. Colour: Black. Body: Metal Upper Receiver with Polymer Lower, Steel & Polymer furniture. Materials: Aluminum, Polymer, Steel. Optic Mount: 20mm picatinny. Rail Type: M-LOK Threaded Barrel: 14mm CCW. Contents: SMG, Magazine, Suppressor. Fires at: 315fps (Green 135 PSI) Weighs: 1300g Length: 323-531 mm