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Discussion Starter · #1 ·
Trying to decide which of these I want to have built as a pistol and form 1.
I do not own a sear.
I don't have any rifles in 300blk or .308.
I do own a 7.62 suppressors that would work on any of these guns.

I have my choices narrowed down to in order of cost
G3k
HK53
HK53 in 300blk
HK53SD in 300blk

What are you thoughts on these?
 

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+1 on 53, but in 300blk.

I think the 53 platform really shines in 300blk. Ammo not cheap, but silly quiet.
 

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I have actually been pondering the same question for the last year.
I have both a 93 and 91(well 2 91's, 1 being set up in the MSG90 configuration)
for hosts already in my position and several parts for both conversions.
My gut and several other influences tell me to go with the 53. Either way it will
go to TSC Machine for the proper transformation. I had TSC complete an MP5K-N
conversion for an SP89 and it came out perfect!!!
 

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The G3K will be easier to get built. The 33 flats have dried up completely and unless you know someone with a stash, that's out. There are a few stashed receivers out there that you might find that someone will part with for about 3 prices (DT has some, I think, for $525ish). :confused: RTG has 33 flats on the horizon but it has been almost 5 months and no joy yet....
 

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I will add my vote for the 53 simply because I think you will have more overall enjoyment from that platform. The flats are less common as was just mentioned, but the 53 is much more preferable to my taste in a short barreled setup, perfect for SBR. I would even check out an MKE 53 clone already built because you mentioned auto sear is not a consideration. The MKE 53s have better availability and are not as expensive as a custom build. You can always upgrade/convert it in pretty much any way imaginable down the road, such as 300blk if you choose.

That being said I hope RTG comes with the 33 flats soon so we can get some custom creations flowing. Roller-locks rule!
 

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Gonna go against the grain here....I actually prefer my g3k to my 53 and find its length to be about perfect. Its less finicky than my 53 and with x-products drums and DAG training ammo its more fun to shoot IMHO for less $ let round once your setup to shoot it. The UB bolt need to run this ammo while hard to come by is not impossible to find either. You have more forend choices with and without bipod mounts and the g3k just has more versatility in the long run. As for optics if you don't plan on running a weld on rail, finding oringal z24 scopes cammed in 308 is the norm while ones cammed for 223 takes a lot of looking.

All that being said if you still want an even shorter lighter weight range toy then go with the 53. However be advised steel HK mags for it are expensive and the poly and 40 rounder aluminum mags suck IMHO. Also .223 ejector levers are harder to come by and as I said 53s can be finicky. But I admit it's a hoot to shoot as it's on the louder and brighter end of the flash bang spectrum.
 

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Discussion Starter · #9 ·
Whichever I go with will almost always have a suppressor. I have already decided that whatever I have built I am going to go with Ghilliebear for the build. My current plan is to save for a 53 in .300blk. Should have enough saved for a 53 in 5.56 by February and .300blk by March. If I get too impatient waiting on the flats to show up it will probably be G3k time.
 

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Discussion Starter · #10 ·
Both!!!! G3k and the 53 in that order.........
I was thinking of going the opposite order. I see more availability for the g3 parts. It looks like the 53 builds will climb in price faster than the g3k ones.
 

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I am getting ready to do a G3K build. I would recommend it over the 53. The 53 is nice but parts are hard to find and magazines are outrageous. I bought 100 G3 mags for $100.00 and another 100 for $150.
 

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Awhile back I was torn on a HK5300, but I already had a PTR32P:

https://www.atlanticfirearms.com/co...ng-pistols/ptr-32-pistol-detail.html?Itemid=0 (I see the price has gone up from $999 to $1,215, and they're Out Of Stock)

My PTR32P with HK21 Clubfoot stock is a blast. Runs great on steel-case Wolf/Tula ammo, and with the Saker 762 on it, still sounds good. AK mags work well and are available everywhere!

I also picked up a PTR-K3P:

https://www.atlanticfirearms.com/co...tol-w-paddle-mag-release-detail.html?Itemid=0

Haven't had a chance to take it out yet. But PTR's quality is really good for monies spent.
 

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Fwiw, I disagree that 53 parts are hard to find. RCM has lots of new production parts. RTG has 33 parts kits and is working on new production flats.

My experience with pro-mags in my 33k and 53s (5.56 & 300blk) has been great.
 

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It all depends on which caliber you enjoy shooting more. Since you don't have a sear, I would lean towards the G3K, as it's a more capable and versatile firearm, and a joy to shoot in semi auto. On the other hand, my HK53 is one of my favorite sear hosts and although it's fun to shoot in semi auto, it's just not as practical as my G3k.
 
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