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GLOCK "Identification Number" Engraving
Glock's thread protectors have different identification numbers depending on the caliber and thread pitch. "43789" (new type) and "42541" (this product, old type) are both identification numbers for thread protectors for 9mm threaded barrels.
GLOCK FACTORY Old Type
GLOCK Identification Number "42541"
| Product No. | ZZ-20 |
| Color | Black |
| Material | Steel |
| Reference Price | 1,900 yen (tax excluded) |
| Remarks | ・Machined steel ・14mm counter-clockwise thread ・Same type as standard equipment on MK27 Mod2 ・Included with early Gen5. FACTORY threaded barrels |
![[DETONATOR] Steel Screw Cover for Glock Factory Old Type, 14mm Counter-Clockwise Thread](http://rock-et.jp/cdn/shop/files/ZZ-20_1_1024x1024.jpg?v=1752208831)
![[DETONATOR] Steel Screw Cover for Glock Factory Old Type, 14mm Counter-Clockwise Thread](http://rock-et.jp/cdn/shop/files/ZZ-20_1024x1024.jpg?v=1752208834)
![[DETONATOR] Steel Screw Cover for Glock Factory Old Type, 14mm Counter-Clockwise Thread](http://rock-et.jp/cdn/shop/files/ZZ-20_1_medium.jpg?v=1752208831)
![[DETONATOR] Steel Screw Cover for Glock Factory Old Type, 14mm Counter-Clockwise Thread](http://rock-et.jp/cdn/shop/files/ZZ-20_medium.jpg?v=1752208834)
