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H&K Rimfire 5780311 MP5 SD Semi-Auto 22 LR 16.2" 20+1
by John T Date Added: Friday 03 May, 2013
I received this item and have had it out to the range once... At 25 yards, all of my shots were impacting WAY too high, even with the rear sight clicked all the way down. Luckily, I noticed a replacement front sight post in the packaging, although the instruction manual makes no mention of it. The front post installed at the factory had a 1 marked on it and the replacement post has a 2 on it. The #2 post appears to be a good 1/16" taller than the #1, which should bring the bullet impact down, presumably into the proper area for 25 yard shooting. The sight post is simple to replace with just the included allen wrench (I recommend a dab of blue loctite). I haven't been able to re-test it, but if the bullet impact is properly lowered, I will be happy.

As noted in some other reviews, the gun is heavy, which gives it a substantial feel in my opinion. Also, the collapsible stock design may be uncomfortable, especially for larger adults, but it is an MP5 replica, so it is what it is. It would be nice if the stock had a bit of drop to it. HK also offers a fixed stock accessory that might be more comfortable for some people. A red dot on a riser would also probably make the shooting position much more comfortable.

If you are planning to mount any sort of optic, you will need to install the MP5 rail mount first. The OEM rail is $100 from HK... I'm sure it's very nice, but that is still expensive for a rimfire weapon. All of the knock-off rails that I have researched do not appear to fit the 22LR without modification... except a version made by MetalTac, which claims to fit the Walther/Umarex HK MP5 22LR. It can be purchsed from a very popular online retailer for about $30 with shipping. I have one on the way to test out.

Overall, this is not a precision benchrest rifle, but it is a very fun way to shoot lots of inexpensive ammo.

Rating: 5 of 5 Stars! [5 of 5 Stars!]
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