As one of the flagships of B&T the APC9K-G PRO represents a breakthrough in customization and modularity on a pistol-caliber platform. Every component is of the highest quality and is meticulously machined and fitted with the Swiss-made precision that B&T is known for. The APC9K-G PRO itself is equipped with several major upgrades such as enhanced lower receiver ergonomics and a side positioned bolt hold open/release. The APC9K-G PRO also sports a non-reciprocating auto-folding charging handle to reduce the risk of snagging on loose clothing/equipment. At the heart of the APC system is the hydraulic shock-absorbing buffer system which greatly mitigates recoil and enhances overall accuracy. In terms of customization the APC9K-G PRO features a flattop picatinny rail for optics as well as an under-barrel rail for lights/lasers. Each APC9K-G PRO unit also has a variety of B&T made accessories including brass-catchers extended magazines and fore-grips designed specifically for that model. In addition many aspects of the APC9K-G PRO are reminiscent of the AR-15 such as the ambidextrous selector switch the ergonomics trigger assembly and accepts AR-15 style grips. These similarities make for a better shooting experience for someone already acquainted with the AR-15. This APC9 PRO-G's lower receiver has also been outfitted to accept the widely available Glock magazines including the 33 round extended magazine.