The APC PRO series brings a new level of performance and adaptability to the APC platform. All models feature a dual auto-folding, non-reciprocating charging handle, improved lower receiver ergonomics including a side positioned bolt hold open/release, removable M4 compatible grips, and Magpul M-Lok accessory slots.Features :45ACPM-Lok Accessory SlotsNon-reciprocating Charging HandleAccepts Glock Magazines