If I am not wrong (possible) the RBL has its single trigger at the rear position. Measuring LOP normally, 14.25" (on otherwise identical guns) first a single trigger RBL and then comparing with the front trigger of a double trigger RBL, would show a difference in LOP of aprx. 1" while both would have the same butt stock length. Rear positioned single triggers must be compared with the rear trigger of double trigger guns.