| 摘要 |
PCT No. PCT/GB/8600270 Sec. 371 Date May 18, 1985 Sec. 102(e) Date Jan. 15, 1987 PCT Filed May 15, 1986 PCT Pub. No. WO86/07138 PCT Pub. Date Dec. 4, 1986.An alignment plug for mounting a laser beam projector assembly on the barrel of a weapon, comprising an elongate body (10) of substantially cylindrical cross-section of which a first body portion serves for location within the muzzle end of the barrel and a second body portion serves for attachment of the projector assembly. A window (17) in said plug serves for entry of light emitted on detonation of a blank round, the light being transmitted to a light detector (14) by a light guide (16) to initiate projection of a coded laser beam. Aperture means (8, 9) extending axially of said plug serves to relieve the pressure of the detonation to the exterior of the barrel. |
