The new M4A1 Carbine from Lancer Tactical has an outstanding list of included features to set itself apart from the competition. This rifle is built with a sturdy full metal body and one piece barrel, ensuring your rifle is ready for the most harsh battle conditions without risking integrity. The functional dust cover, detachable carry handle, and imitation bolt catch add to the overall realism of this replica, making this a fun weapon for airsoft enthusiasts. With the integrated six-position adjustable rear stock, players of all sizes can use this rifle with no limitations and can easily be adjusted for CQB and long range engagements. The RIS top rail allows for players to customize this rifle how they see fit by adding accessories like Optic Scopes and Red Dot Sights. The rifle also comes with adjustable flip-up front and rear iron sights so you can zero in your target accurately even in CQB situations where using an optic scope may prove difficult. Internally, the Lancer Tactical M4A1 is fitted with a metal reinforced Version 2 Gearbox which contains high quality full steel gears, M125 spring, metal spring guide with bearing, reinforced cylinder head and vacuum piston head. The 440 FPS will have your enemies shaking in their boots when they are confronted with this HPAEG. This next level gearbox also comes with metal precision 8mm bearing and bushing set to ensure rapid, smooth gear change and long lasting durability. Lancer Tactical made sure this gun comes skirmish ready, by including a 8.4v 1200mAh Battery and Charger with every package. Utilize the adjustable hop-up to account for target range and wind conditions in order to get that perfect shot, every time. By combining a durable full metal build with the power and accuracy needed to take out the competition, the M4A1 from Lancer Tactical is an AEG that will surely resonate with players of all skill levels and play styles.