The Valken Alloy Series M4 MK1 AEG Black is an all metal CQB airsoft gun with SHS gearbox guts newly made in 2018.  It's like the MK3 Keymod alloy, but a little shorter in length.  It's a solid airsoft design that most airsofters desire in an out-of-the-box base configuration.  For a high-end gun, this is one of the 'best bang for buck' airsoft guns made.  We definitely recommend it.  Now on to specifics:

This is an all metal AEG gun, featuring a shorter carbine length aluminum Keymod (side rails and partial lower) and standard upper and lower (partial) rail system, metal upper and lower receiver, and many other parts.  Buffer tube is milspec, with its 6 position crane stock, and metal sling attachment point.  14mm CCW outer metal free floating barrel.  The bolt catch is fully functional.  Flip up 45-degree angled sights included (we recommend adding a sight).  Magazine is a 450-round hicap all metal mag.

Internal upgrades feature:  one-piece hop up chamber, micro trigger switch (not a mosfet, but similar; can use a LiPo), SHS upgraded steel gears 18:1 ratio, SHS piston with steel teeth (2nd tooth removed), steel one piece 6.03mm inner barrel, upgraded wiring, 8mm bearings V2 metal gearbox, quick change spring gearbox.  Crane stock will work with most types of LiPo batteries or the 9.6v 1600 nun-chuck battery (included).

FPS:  370 w/.20g BBs. - The gearbox is a quick change spring system if you ever want to raise or lower its FPS.

One year warranty for defects from Valken!

Package deal combo:  9.6v nun-chuck Battery and Smart Charger included.  Can use 7.4v or 11.1v LiPo batteries (sold separately).