HK 91 Field strip

[Vegaslaith]

Does anyone know where to find an instructional video/clip on how to field strip an HK91/G3? I searched THR and youtube but no luck. I want to see how they work before actually trying/buying. Thanks.

 

[PTK]

They're pathetically simply to disassemble, about on par with an AR-15. Two pins, remove stock, remove FCG, pull out bolt. DONE.


http://home.att.net/~j.p.george/HK91.htm

 

[Vegaslaith]

Oh. Thank you. I don't see why everyone says its so complicated then.

 

[Destructo6]

It's not difficult to disassemble. Figuring how to unlock the bolt head while attempting to reasseble is the tricky part.

I think that mg42.net has some good instructions.

 

[taprackbang]

Hey VL,

If you have a prob with the bolthead, let me know. The trick with that is depressing the rollers at the precise time when turning the bolthead. This is during reassembly. You will know when you have done it right because it will sit just right.

 

[TexasRifleman]

Yep, the bolt is the only part that can be confusing.

Just pay real close attention when you take it apart the first time.

Here's a site I found a while back with some pictures.

http://home.att.net/~j.p.george/HK91.htm

 

[Z-Michigan]

First time I worked on my PTR I think I took less than two minutes to disassemble, and roughly an hour to reassemble. Of that hour about 57 minutes were spent getting the bolt and bolt carrier back together.

Does it get easier with practice???

 

[Destructo6]

Does it get easier with practice???

Absolutely.

 

[Chipperman]

Does it get easier with practice???

Yes. The key is making sure you do not push the bolt head all the way back onto the carrier while you are trying to turn it. Just push it back far enough that you can turn it on the raised contour of the head. Remember also that you turn the bolt head so the groove is pointing DOWN away from the carrier.

Once you really understand the mechanics of it, the reassembly makes more sense.

 

[cmidkiff]

I guess I'm the only one who found it effortless. 2 pins, stock and trigger group basically fall away, pull the bolt and carrier, put them back the same way. Easy as pie.

Yeah, if you push the bolt back so that the roller bearings lock out, the bolt won't go back in. Just rotate the bolt head and push the bearings back flush... no big deal.

Enjoy

 

[Z-Michigan]

Yeah, if you push the bolt back so that the roller bearings lock out, the bolt won't go back in. Just rotate the bolt head and push the bearings back flush... no big deal.

There must be some variation in clearances that affects how much force is required to push the rollers back in. On my bolt it required pliers and a lot of effort.

 

[Destructo6]

There must be some variation in clearances that affects how much force is required to push the rollers back in. On my bolt it required pliers and a lot of effort.

The locking lever on the left side of the bolt is the real culprit. When that snaps over the ridge on the back-left of the bolt head, it's silly to try to fight it.

Rotating the bolt head puts the locking lever on a flat portion, so you can "easily" extend the bolt head, then rotate it back to firing position.

I've heard of european military guys advocate putting the bolt head & carrier assembly into the receiver backwards and giving it a good whack to extend the bolt head. Sounds fine to do with a rifle owned by the state, but not something I'd do with mine.

 

[Chipperman]

I've heard of european military guys advocate putting the bolt head & carrier assembly into the receiver backwards and giving it a good whack to extend the bolt head. Sounds fine to do with a rifle owned by the state, but not something I'd do with mine.

If you've ever seen a receiver after having this done a few times, you'd never even consider it. When you do that, the roller locks push against the walls of the receiver. Remember this is a SHEET METAL receiver. The locks dent out the receiver walls, leaving a nice bulge.

Like you said; if the State owns the gun no big deal.