For those who are limited to a 14.5-inch barrel for the M4, this package features a non-contact FF rail system and a backup sight compatible with optical sights. Furthermore, the selector lever and mag catch, which are difficult to install, are pre-installed as ambidextrous (for left-handed and right-handed use), making this a quick and easy setup package. The rail and flip-up front/rear sights are a reproduction of the heavy-duty type adopted by the US military, and the receiver engraving is a simple US arsenal type without a manufacturer's logo. The rest is down to you to enjoy setting it up according to your own taste.
Weight: 3265g
Overall length: 865mm (783mm when stock is shortened)
Magazine capacity: 40 rounds
Firing mode: semi/full auto
![[KSC] M4A1 RAS Gas Blowback](http://rock-et.jp/cdn/shop/products/m4a1_ras_01_1024x1024.jpg?v=1617073896)
![[KSC] M4A1 RAS Gas Blowback](http://rock-et.jp/cdn/shop/products/m4a1_ras_02_1024x1024.jpg?v=1617073897)
![[KSC] M4A1 RAS Gas Blowback](http://rock-et.jp/cdn/shop/products/m4a1_ras_03_1024x1024.jpg?v=1617073897)
![[KSC] M4A1 RAS Gas Blowback](http://rock-et.jp/cdn/shop/products/m4a1_ras_04_1024x1024.jpg?v=1617073897)
![[KSC] M4A1 RAS Gas Blowback](http://rock-et.jp/cdn/shop/products/m4a1_ras_01_medium.jpg?v=1617073896)
![[KSC] M4A1 RAS Gas Blowback](http://rock-et.jp/cdn/shop/products/m4a1_ras_02_medium.jpg?v=1617073897)
![[KSC] M4A1 RAS Gas Blowback](http://rock-et.jp/cdn/shop/products/m4a1_ras_03_medium.jpg?v=1617073897)
![[KSC] M4A1 RAS Gas Blowback](http://rock-et.jp/cdn/shop/products/m4a1_ras_04_medium.jpg?v=1617073897)
