![Browning Buckmark, Challenger II & III firing pin, old style, round #PO50457 » Jack First Inc. Gunsmithing Excellence Since 1954. Browning Buckmark, Challenger II & III firing pin, old style, round #PO50457 » Jack First Inc. Gunsmithing Excellence Since 1954.](https://jackfirstinc.com/wp-content/uploads/2018/07/IMG_7675-scaled.jpg)
Browning Buckmark, Challenger II & III firing pin, old style, round #PO50457 » Jack First Inc. Gunsmithing Excellence Since 1954.
![Browning Buckmark, Challenger II & III firing pin spring for old style flat firing pin #B5152659 » Jack First Inc. Gunsmithing Excellence Since 1954. Browning Buckmark, Challenger II & III firing pin spring for old style flat firing pin #B5152659 » Jack First Inc. Gunsmithing Excellence Since 1954.](https://jackfirstinc.com/wp-content/uploads/2019/07/IMG_4156-scaled.jpg)
Browning Buckmark, Challenger II & III firing pin spring for old style flat firing pin #B5152659 » Jack First Inc. Gunsmithing Excellence Since 1954.
![Browning parts, early Buckmark firing pin, flat, obsolete - Small Pistol Parts at GunBroker.com : 1045730067 Browning parts, early Buckmark firing pin, flat, obsolete - Small Pistol Parts at GunBroker.com : 1045730067](https://assets.gunbroker.com/pics/1045730000/1045730067/pix383745344.jpg)