Mechanically attachable fletching (shown as double fletching 220, 222, 224, 226, 228) is disclosed herein for a projectile 100, 102, 104, 112, 118, 120, 126, having a shaft 200, 300 having an exterior surface. The mechanically attachable fletching includes at least one fin 230, 232, 234, 236, 238, a connection section 231, 233, 235, 237, 239 bordering the at least one fin, and at least one mechanical fastener 240, 241, 244, 244′ 250, 254, 254′, 262, 266, 272, 276, 280, 282, 290, 294 for attaching the fletching to the exterior surface of the shaft via the connection section. Also disclosed herein are methods for mechanically attaching fletching to the shaft of the projectile. Also disclosed herein are illuminated projectiles 102, 108, 110, 112, 116, 120, 122, 124, 126.