Guntec USA 5.5" 9mm 1:10 HBAR Complete Upper - 4" M-LOK Rail - SOCOM Style Fake Mini Suppressor

Manufactured by Guntec USA
Manufactured by Guntec USA
6 Reviews

Out of Stock

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GuntecUSA has been designing, manufacturing, and distributing tactical weapon accessories since 1989. Their goal is to supply excellent quality, at an economical value to professionals and enthusiasts alike.

This complete pistol caliber upper half has features a dedicated 9mm upper receiver mated to a quality 5.5" 9x19mm barrel and 4" free float M-LOK handguard. For enhanced aesthetics, a shorty SOCOM-style faux suppressor has be installed. The 9mm bolt carrier group features a spring loaded firing pin.
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AssemblyComplete Assemblies
Barrel Length5.5
BrandGuntec USA
Caliber Gauge9mm Luger
Handguard4 in M-LOK Rail
Muzzle DeviceFaux Suppressor

WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see

Ratings & Reviews

6 reviews

  • 4 stars
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Nice looking compact upper with issues

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Over all the upper is nice looking. There is a gap between the upper and the rail where they meet and cannot be adjusted out. Otherwise the looks are very good. The real issue was trying to mate this upper with a Gun Point GPM-9 LRBHO billet lower. Nothing but binding issues with the bolt carrier on this upper. To the point of not something that will wear in. I removed the bolt and put in an Alpha Shooting Sports 9mm bolt carrier I already have and it operated like butter. I put this bolt into my existing pistol and it would bind up in it as well. So I know its not the upper receiver or the buffer tubes on either pistol. This bolt just doesn't work.

Runs great, good upper!

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Ran great almost right out of the box (I did clean and lube it before shooting). Put it on a New Frontier Glock mag pistol lower. Cycled perfectly (only 150 rounds down range so far) on basic Federal 115 grain. Was only shooting at about 50 yards, but hit the steel every time (sry didn't measure the groups). The BCG it came with worked without any problems. Used a Guntec USA 9mm buffer (8.2oz I think) and a regular carbine buffer spring. The "fake can" on it is just slightly cooler looking linear comp, but works well for pushing blast forward. Overall very happy with the upper!

Great Upper, Great Price

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I purchased this upper assembly to go on a Spikes Tactical Spider 9mm Glock lower and it fits like a glove. I've put at least 300 rounds through it with no issues and have been having a blast with it. Great upper setup and worth every penny. Considering Guntec sells this kit for $595 and you gotta put it together yourself, this is an amazing deal. Everything works like it's supposed to and looks amazing fully assembled. I've built several AR rifles and 3 AR pistols and this one is my favorite. Buy this, you won't regret it.

Guntec 9mm upper

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Fit my Spikes Tactical (Glock) lower perfect , its tight no wiggle at all. Very happy with my purchase, Primary Arms has low prices & fast service , I buy from them on all my AR builds

Like It

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Perfect fit to my Foxtrot Mikes lower. Sub 1 " groups at 15 yards with Fastfire II. Doesn't like aftermarket glock clips but thats OK

Definitely Recommended!

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Bought this as part of my first AR build and paired it with a glock dedicated billet lower receiver from PSA and SBA3 pistol brace. I run ETS clear 31rnd magazines and have run a few hundred rounds through this setup. Since the first trigger pull, I have not had one malfunction whatsoever. I mean it, every single round cycled flawlessly since round 1. Very accurate as well. Slightly heavy at 5lbs11oz with no magazine and a micro red dot attached. The finish on the receiver itself is flawless. Seriously silky smooth! Only downside I think is that the receiver is a commercial spec instead of mil-spec so not all mounts/accessories will work on the receiver the handguard is mil-spec it seems. Running a single pin mount on the receiver. No big deal otherwise!
<br>This is seriously a good buy considering it's double the price on Guntec's site and it's not assembled from them and this one is complete.
<br>This is my first and only Guntec product so far but I'm very pleased with this purchase!