ANSWER: Saturday Whatsit

Now, it’s time for the big reveal, what rifle does yesterday’s mystery part come from? Scroll down for the answer!


The answer is the Robinson Armament Company M96 Expeditionary Rifle!

Congrats to commenters Arashi and Mark Hartmann, who got it right!

I spent this weekend at fellow TFB author Alex C’s place, weighing the wide variety of firearms he has as well as some of their components, for a couple of future articles. I took the picture of the M96’s bolt as part of the project (which is why it is on a scale) and decided it might be fun to play a little guessing game with our readers!

Thanks to all who participated, and stay tuned for more!



Nathaniel F

Nathaniel is a history enthusiast and firearms hobbyist whose primary interest lies in military small arms technological developments beginning with the smokeless powder era. In addition to contributing to The Firearm Blog, he runs 196,800 Revolutions Per Minute, a blog devoted to modern small arms design and theory. He is also the author of the original web serial Heartblood, which is being updated and edited regularly. He can be reached via email at


  • Aaron

    Yeh.. Thought so… o.-

  • TVOrZ6dw

    I thought everybody knew that….

  • Hokum

    That M96 is kinda… desaturated q_-

  • Bill

    I learned that Dymo made scales.

  • me ohmy

    figures….I never liked that company or his attitude.. congrats to the winners, Robinson is a tool

  • Yimmy

    Thanks for the fun guess game. Stuff like this keeps thing interesting!

  • Kelly Jackson

    My first guess was Robinson, but I was thinking the XCR and when I googled it the bolt looked completely different. I forgot about this gun.

  • mechamaster

    Congrats for the right answer !

  • Dan

    I knew the answer I just didn’t want to say it.

  • A

    How is the bolt rotated without the cam pin?

    • Pin is on the opposite side, the hole is just blind.

  • BigFED

    About this “Name the Part”. Completely off topic, but it is related to identifying things and reminds me of an old joke. Drunk goes into bar and asks the bartender “How many brands of beer do you carry”? This particular bar advertised that it had the worlds largest selection of beers so the number was 1,000 (pick a number, this is a joke”!!!) The drunk tells the bartender that he bets, for a full glass of beer, that he can take one sip ANY of beer the bartender randomly selects and tell the whole story about the brand and how it was brewed. Under pressure from other curious customers, bartender agrees. He picks one, the drunk takes one sip and elaborates a perfect history of the brand right down to just how old this particular batch is. This goes on for MANY, MANY beers and the bartended is getting flustered. Finally, the bartender, out of sight from the other patron, takes a piss in a glass and hands it to the drunk. The drunk takes that one sip and, of course, immediately spits is out, saying “this tastes like piss”. The bartender smiles broadly and says, “Yes, but WHOSE???