18. When the recruit has shown proficiency in grouping, deliberate firing, and snapshooting, on the miniature, 30-yard, and open range, explain and practise adjusting long-range sights. 19. Practise aiming from a rest at figure targets and ground. 20. Practise snapshooting and rapid fire at figure targets and ground on miniature, 30-yard, and open range. 21. Practise aiming-off for movement at figure targets on miniature range. _Note._--(1) Ample time should be devoted to trigger-pressing and declaring the point of aim on discharge. This instruction may conveniently be given indoors. (2) The aiming position should not be taught until aiming has been taught. (3) Aiming and trigger-pressing should not be combined until trigger-pressing has been taught. (4) The test for trigger-pressing should not be applied until after the lying position has been taught. (5) The miniature range may be used when assurance of reasonable proficiency has been ascertained by means of the aiming discs. (6) The 30-yards range with service ammunition may be used when the results on the miniature range are satisfactory. (7) Grouping on the open range may be commenced when the recruit is able to make good groups on the 30-yards range. =4. Selecting Rifles for Recruits.=--(i) Before the instruction of recruits in aiming and firing commences they must be fitted with rifles having long, normal, or short butts, according to the build and preference of the men. The choice should be made after tests carried out in the standing and lying positions, and should be based on the readiness with which the firer brings his rifle up to the firing position, and aligns his sights without letting his nose and mouth come into close proximity to the thumb and fingers of the right hand. (ii) The principal consideration is _the distance of the nose from the shoulder_, and it is as a rule the broad-shouldered and long-necked men that require the long butts. A bad trigger release, due to incorrect holding of the small of the butt, will often result from the use of too short a butt. _The butt selected should be the shortest which can be used comfortably when firing, both standing and lying down, in the correct positions._ These rules for fitting rifles of course apply also to non-commissioned officers. =5. Sights.=--Special care must be taken that _the sights of any rifle used in aiming instruction are in perfect order_. Instructors must inspect the sights frequently to insure that they are _correctly adjusted_ in accordance with his orders. =6. Appliances for Aiming and Firing Instruction.=--(i) The following appliances will be needed by instructors: (_a_) Diagrams showing position of sights correctly and incorrectly aligned. (_b_) The Legret aim-teacher. (_c_) Aim-corrector. (_d_) Aiming-disc. (_e_) Aiming-rest. (_f_) Firing-rest. (_g_) Charger and dummy cartridges. (_h_) Measuring rings [see Sec. 49, para. 6 (xi)].