What is this gadget?

[jsbhike]

So it's bad to shoot a rifle grenade with a live round? Yeah, that is probably one of those things where you better read the manual. Can't even remember the last time I saw a rifle grenade, was probably late 70s. Did they use a standard blank or was their a special rifle grenade round? I always assumed they used a blank.

If it's like 7.62x51, the blanks for grenade launching are hotter and not to be used with blank firing attachments.

These use a standard rifle cartridge.

http://www.mecar.be/content.php?lang...nus=1156765282

[SteyrAUG]

If it's like 7.62x51, the blanks for grenade launching are hotter and not to be used with blank firing attachments.

These use a standard rifle cartridge.

http://www.mecar.be/content.php?lang...nus=1156765282

No kidding. That would be f'ing scary.

And I guess I didn't think about the power of a blank related to a rifle grenade, would really suck to launch that thing to a distance of 25 feet in front of you.

Glad it's something I simply never needed to mess with.

[T2C]

If it's like 7.62x51, the blanks for grenade launching are hotter and not to be used with blank firing attachments.

These use a standard rifle cartridge.

http://www.mecar.be/content.php?lang...nus=1156765282

The grenade launching cartridges were known to crack the stock on a M-14.

[JoshNC]

It’s the bipod mounting stud. That’s a Colt HBAR m16, the model 606A.

[jsbhike]

It’s the bipod mounting stud. That’s a Colt HBAR m16, the model 606A.

That is the one. That's weird the barrel didn't seem to be stamped with anything...made me suspect cobbled together.

Apparently the museum doesn't know what it is and/or didn't plan on anyone looking at the info plaque and figuring the 2 don't match.

[mack7.62]

Special grenade cartridge, you can use a regular blank but range is very limited, as an example with 30-06 using a regular blank you will get about 50 yards, with grenade cartridge you get up to 175 yards. A 5.56 regular blank would likely cause a "Hoist with his own petard" scenario.