Comments on: Video: World’s Only 7.62mm Caliber LMG with Semi-Auto Mode

By: p_wallace

p_wallace — Sat, 07 Apr 2012 06:13:36 +0000

This means that the bolt is in the open position on the firearm until the trigger is pulled it then moves forward stripping the round and inserting it into the chamber, then firing.
Most machine guns are designed this way to promote cooling as it allows airflow through the chamber and barrel and the round isn’t inserted into a hot chamber where it can absorb heat from the hot metal and therefore “cook off” which means it will discharge due to the heat building up in the case.
It does hurt accuracy though due to the impulse of the bolt slamming forward disturbing the sight’s alignment unless the gun is mounted in an almost solid arrangement like a tripod etc. and I don’t think this weapon in the article can be mounted that way. I do think that is is capable of firing either way as it does fire from a closed bolt in semi-auto mode.

By: nmgene

nmgene — Thu, 05 Apr 2012 21:28:57 +0000

What do they mean when they say it fires from an open bolt. That statement makes no sense to me what so ever.

By: gunslinger454

gunslinger454 — Tue, 20 Mar 2012 09:28:15 +0000

I’m pretty sure the HK21 also has a semi-auto setting and a burst setting as well. Granted, it’s not exactly a ‘light’ machinegun. Actually it’s pretty damn heavy! But, it’s also the only belt-fed MG that can be used EFFECTIVELY as a sniper rifle. Don’t get me wrong; I’d really like to have one, an NG7 that is, but I’d rather have an HK21.

By: odiesbsc

odiesbsc — Mon, 19 Mar 2012 20:11:34 +0000

I want one. Gotta have it!