My son (10) made a rifle with Lego Technic (mostly set 42097). I like the detail with the little rifle scope in the front. : r/lego
Lego Mini Technic Pistol (working) +(Tutorial) - YouTube
✓ Compact LEGO Technic Gun [WORKING] - YouTube
My first LEGO Technic Moc. It's supposed to be a sniper rifle! It isn't able to shot or anything, but it does have som features like a trigger and a reloading system! :
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NEW Upgraded Electric Motor Power Toys High tech MP5 Submachine Gun Model Building Block DIY Brick Boys Gifts|Blocks| - AliExpress
2 Simple Lego Technic Guns - Instructables
LEGO MOC Technic Gun by ColonelCanuck | Rebrickable - Build with LEGO
Working LEGO Pistol V2 | 3-Studs Wide (+Tutorial) - YouTube
Amazon.com: ZOSTER Technic Desert Eagle Pistols Building Kit WW2 Military Manually Loaded Shooting Simulation Mechanical Weapon Model Compatible with Lego (563 Pieces), Pistol, 26.5 x 4.5 x 17 cm, (T536086176) : Toys & Games