MidwestPX

Yeah, 9.5lbs with the optic got pretty heavy after the first hour of carrying it without a sling. A physical lesson in things not to do again.

I carried my SPR for 3.5 hours last weekend as I was on an executive protection detail. ... Okay, I was carrying the rifle while my wife picked berries in an area where poachers have been sighted. Anyhow, I didn't have my rear sling swivel cup setup and my sling had the QD swivel sown in so I was SOL on slinging the rifle. We're doing it again this weekend but it'll be an all day thing so I figured I should get the rifle right.

Mine showed up today. No shipping notice or order update email. Not that I'm complaining, just stating that for others in case people think they have to get an email before their order ships.

I rigged up a Magpul ACS QD swivel cup to a Luth-AR stock. It was pretty easy. 1. Using a 13/64 drill bit, enlarge the hole in the swivel cup recess in the stock 2. Push the swivel cup into the recess. You may (will) need a hammer. 3. I used seven M5 flat washers and one M5 split washer on the opposite side to act as spacers/standoffs since the bolt is too long and if screwed down until flush, will interfere with the swivel as it's being inserted.

Oh man, if I told you some of my CS stories.... I haven't gotten a shipping notice for my PC but I don't really care since I'm still waiting on my HSGI tacos to ship too.

Yep. I think the more vague wording of NJ code relative to CA and NY makes the MR2 a non-starter in NJ.

The MR2 is geared more toward the CA and NY crowds which is where we ship them primarily.

Nope, haven't shot a Mk48 yet but am considering picking up an open bolt version. The thought of feeding has me on the fence though.

The two I know of are Machine Gun Armory and Great Machine. I don't know if Ohio Ordnance works on the M249/Mk46 family though. MGA has verbage on their site regarding using registered sears to make their semi-auto closed bolt M249/Mk46/Mk48s legally run full auto. I think the difference is the MGA/GM closed bolt M249/Mk46/Mk48s were designed around the HK trigger pack whereas the original FN design was not. Because it's designed around the HK trigger pack, it's legal to install a full auto HK pack (either a post sample or registered one) using the same logic as moving a post sample or registered pack from one HK host to another. Correct me if I'm wrong but in your example, the FNC sear was not designed for the SCAR or any other FN rifle which is why it wouldn't be legal to drop into the named hosts.

There are at least two companies I can think of who "mass" produce these closed bolt designs which is why I don't think of them as custom jobs. We might have different definitions. Yes, a non-SOT may legally use a registered sear/pack to make this a full-auto closed bolt gun.

Not a custom job at all. There're a couple places making Mk46s and Mk48s using this design. It's similar but different to what is fielded to the military. The FCG is from an HK G3 and this fires from the closed bolt position, not the open bolt. If you'll recall, the M249/Mk46s that are fielded to the military en masse have their operating rod and spring removed from the rear. This design uses a captured op rod and spring assembly at the front, housed inside the gas tube and screwed into the front of the carrier. These closed bolt guns are sold with semi-auto trigger packs, making them title one firearms. I as an SOT manufactured a post sample G3 trigger pack that I dropped in place of the semi-auto pack. Since the rest of the gun was setup to run full auto, the trigger pack swap is all that's needed to enable it.

Full blown open bolt Mk46 is taking its place. Might see about having a Mk48 done too but the idea of feeding it is terrifying.

Well, it looks like that Mk46 is being sold as a title one firearm (semi-auto only) and I'll be replacing it with something MO BETTAH!

Yeah, I wish I had one to sell you but I've been out for awhile now.

Yes, there's a difference in quality. I'd put DD parts on a rifle I'd trust my life with. YHM, not so much. My personal experiences with YHM products have not been so hot. One of my friends had a handguard come loose and the barrel nut was found to be out of spec. YHM told him it wasn't a big deal and the gas tube would keep it from rotating. Umm...okay... I've heard some other wholesale-related issues but that doesn't really affect the end user so I won't comment on those.

Nah, the other people won. I shot less than 40 rounds myself, almost all through my SPR. I zeroed the other guns and function checked the autos before handing them off to the other shooters.

My father in law and I got out to the range this weekend. The SCAR and the LMT/Mega AR were his. I brought my 18" SPR and a couple full-auto PX guns. We had fun and popped a few full auto cherries as the other guys at the range hadn't shot full-auto before. All of the guns in this picture needed zeroed at various ranges which is the primary reason why we were out. Spreading the full-auto love around was just icing on the cake. So what did you take and what did you do?

A co-witnessing fixed front sight is pretty hard to beat, IMO. That said, I do also like the MBUS Pro sights due to their small footprint as well as solid construction.

Nice rifle. I got out with my 1-8.5 Bushnell this last weekend and it's an amazing optic which would be at home on your 901. You should definitely look into one. I've handled some 1-6 optics as well and while they're nice, this 1-8.5 is like cheating.

Nope but my card was charged mid last week.

Haha, if you find yourselves in my neck of the woods, call me. I love taking people to the range.

Did someone say "belt fed"?? Kind of a hybrid. Mk46 Mod1 receiver with a 20" M249 barrel. This is one of the Great Machine builds which use modified HK G3 trigger packs. It's a title one firearm as it fires from a closed bolt however I did drop a post-sample G3 trigger pack in it so it's capable of full auto as all the internals are full auto parts.

Machine time primarily. Forgings and billet aluminum, when purchased in high enough quantity, are nearly the same as far as cost goes. However, billet parts need more features machined in them therefore the cycle times are longer which means less output per hour.

Billet means machined from a bar of metal so basically starting from nothing but a square piece of metal. Forged means starting with a forging that has the exterior features already present.

10mm sidearms and .223AI rifles.