Optics Planet’s Impressive Gun Glossary

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Optics Planet has a handy little glossary for hundreds of the most common terms used within the shooting sports. Ranging from calibers .117 to “Zero” and “Zoom” the glossary is a solid start for a newbie to learn more or an enthusiast to brush up on their diction and definitions.

I, for one, am a fan of these types of resources. Being someone who enjoys forums, I personally watch experienced users berate new joins for “dumb questions” and not “using the search.” These types of resources help both new and experienced alike meet in the middle and increase enjoyment of shooting.

Those interested in perusing the complete list can head on over to Optics Planet by click here. 



Nathan S.

One of TFB’s resident Jarheads, Nathan now works within the firearms industry. A consecutive Marine rifle and pistol expert, he enjoys local 3-gun, NFA, gunsmithing, MSR’s, & high-speed gear. Nathan has traveled to over 30 countries working with US DoD & foreign MoDs.

Nathan can be reached at Nathan.S@TheFirearmBlog.com

The above post is my opinion and does not reflect the views of any company or organization.


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  • USMC03Vet

    “Accidental discharge (AD): The unintentional firing of a gun”

    No such thing. Nice try, Optics Planet.

    • ostiariusalpha

      No, that really is the literal definition of an accidental discharge. AD doesn’t assign blame, but that darn subsection of AD, the negligent discharge, sure does.

    • iksnilol

      You can unintentionally fire a gun if you are being negligent. So they were correct there.

      • ostiariusalpha

        There’s also a little thing called a slam fire that is not really due to negligence. Also, self loading pistols can go fully automatic when parts wear, like the disconnector. They can go full auto if you improperly disassemble & reassemble them too, though misadjustment is negligence of course.

    • TheNotoriousIUD

      I know what you mean, more like negligent discharge.
      I read an account of TWO Delta guys who AD’d their weapons in a hangar in Mogadishu and were sent home.

    • Vitsaus

      All accidents can be considered the result of negligence, but accident is a result, not a cause. Their definition works. It is possible to be negligent and have an unintentional result, as well as being negligent intentionally. Intentional negligence makes up about 50% of youtube gun videos.

  • 6.5x55Swedish

    They derped when it comes to magazine stating that it must be in a semi-automatic weapon.

  • Pseudo

    I appreciate the spirit of what this guy was trying to do but the whole thing seems poorly cobbled together. Some of the descriptions are baffling and unhelpful. ‘Clip’ is described as a wrong way to refer to a magazine. If clip had no other meaning then it would be perfectly fine to call magazines clips, but clips actually have a separate meaning which is NOT listed for no apparent reason. Also, ‘Silencers’ are devices that suppress sound. In reality there is no such thing as a silencer… Ok, I get where he was going with that, but then there is no entry for suppressor, the term accepted by the community ‘silencers.’ Also, some things are completely arbitrary. Velocity is the speed of a bullet in FPS? Why?Trajectory has a tortured definition. How about ‘The path taken by a projectile’? A good idea, but it needs some work. It’d be nice if there were a contact link on the page or the author’s info page, but I couldn’t find one. Don’t feel like posting on the facebook comments.

  • RICH

    Well…… at least Optics Planet is attempting to keep people informed. I’m sure if feedback is sent to them they will resolve any mis-information they may give. They are a pretty good and reputible outfit ! imho….. !