FAB Defense R.A.P.S - Rapid Adjustment Precision Stock - Collapsible Flat Dark Earth 152-194mm H / 203-235mm L fx-rapsct. It incorporates many features found in the standard RAPS including an integrated cheek rest adjustable length of pull (LOP) a wide range of adjustments one-handed operation and a memory function. All these features are packaged in a more compact and lightweight design that is compatible with the standard carbine buffer tube. Specifications for FAB Defense R.A.P.S - Rapid Adjustment Precision Stock - Collapsible: Manufacturer: FAB Defense Gun Model: Universal AR-15 Gun Type: Rifle Weight: 584 g Length: 203 - 235 mm Hand: Ambidextrous Buffer Tube Size: Commercial or MIL-Spec Features of FAB Defense R.A.P.S - Rapid Adjustment Precision Stock - Collapsible: Integrated Cheek Rest & adjustable Length Of Pull (LOP) Patent-pending 1 Latch system locks both LOP and Cheek Rest height with one lever; can be configured for right or left-hand shooters LOP memory feature; set it once and the adjustable butt-pad will spring out to the same length every time LOP Adjustment Range extension: 32mm (1.26") Integrated Cheek Rest adjustment range; 42mm (1.65") Concealed Picatinny rail at the bottom of the stock for use with a monopod Heavy-duty rubber butt-pad with height adjustment The RAPS-C includes a retention bolt for determining optimal fit on MIL-Spec or Commercial-Spec Carbine buffer tubes Easy installation no gunsmith required Package Contents: FAB Defense R.A.P.S - Rapid Adjustment Precision Stock - Collapsible What firearm models does the manufacturer say FAB Defense R.A.P.S - Rapid Adjustment Precision Stock - Collapsible is compatible with? The manufacturer says that FAB Defense R.A.P.S - Rapid Adjustment Precision Stock - Collapsible is compatible with AR-15 UniversalFAB Defense fx-rapsct: R.A.P.S - Rapid Adjustment Precision Stock - Collapsible Flat Dark Earth 152-194mm H / 203-235mm