This is an original factory replacement part. Factory replacement parts are manufactured to the exact same specifications and tolerances and use the same manufacturing materials as the original parts which guarantees excellent fit and reliable operation. Notes: Requires a Glock Magazine Insert for +2 magazines (Product 883766, sold separately) to function. Will not fit 10-Round magazines, except G26 and G37. Color Black Material Polymer Extra Features N/A Compatible With Glock: 17 17C 17L 19 22 23 24 26 27 28 31 32 33 34 35 37 38 39 Product #: 968128