I recently reported acquiring a HK UMP9 SF about a week ago.
https://www.canadiangunnutz.com/forum/showthread.php/1710393-HK-UMP-SF-9mm-The-Real-Deal
I had a chance to shoot it for the first time this morning. Having shot a lot of HK MP5's and HK SP89's this direct blowback sub-gun is definitely short of a roller delayed blowback action but for a high percentage polymer sub-gun it is surprisingly precise.
The felt recoil is negligible and with open sights only I was able to stay on target after each shot. At a 1 per second cadence the groupings were tight at 20 Meters. There is a peep rear sight and a hooded front post which helped with groupings.
Ammunition was a combination of Winchester Silvertip Hollowpoint 115gr and Winchester jacketed Hollowpoint LE 115gr 9mm. This ammunition is loaded fairly hot and was the operational ammo in use by a federal police force to drive the MP5's and MP5SD's for many years.
Out of 250 rounds total there were no failures either to fire, feed or eject. Empty casings are ejected forward on an approximately 20 degree angle from the 90 and at a distance of about 15 feet.
The target was a standard silhouette at 20 M. The first 5/30 round mag (sadly) was used to determine the point of impact with my sight picture and stance. You can see the five outliers outside the main cluster. The remaining 35 (40 rounds total for this target) came together fairly well. I was loading from two different ammunition sources which may account for the cluster separation.
The chamber on the UMP is fluted like the MP5 and P7 pistol series. There are 16 flutes which serve to aid in case extraction/ejection. You can see the flute markings on the casings in the following pic.
Cleaning.
The UMP breaks down in the Lower, Upper, Bolt Group and magazine components. There was surprisingly little fouling after 250 rounds although the commercial Winchester seems to be fairly clean burning.
Here are some close-ups of the bolt face, buffer and lower. I was expecting more residue.
Overall, glad I made the investment. An Aimpoint micro T2 optic will make a world of difference on this sub-gun as opposed to the open sights. I might have to remove the top 1/3 of the sight hood to achieve clear co-witness but we'll see when it arrives and gets mounted.
Ready for another day. I always find the range reports from Master-G very informative so I figured it was my turn to contribute something.
https://www.canadiangunnutz.com/forum/showthread.php/1710393-HK-UMP-SF-9mm-The-Real-Deal
I had a chance to shoot it for the first time this morning. Having shot a lot of HK MP5's and HK SP89's this direct blowback sub-gun is definitely short of a roller delayed blowback action but for a high percentage polymer sub-gun it is surprisingly precise.
The felt recoil is negligible and with open sights only I was able to stay on target after each shot. At a 1 per second cadence the groupings were tight at 20 Meters. There is a peep rear sight and a hooded front post which helped with groupings.
Ammunition was a combination of Winchester Silvertip Hollowpoint 115gr and Winchester jacketed Hollowpoint LE 115gr 9mm. This ammunition is loaded fairly hot and was the operational ammo in use by a federal police force to drive the MP5's and MP5SD's for many years.
Out of 250 rounds total there were no failures either to fire, feed or eject. Empty casings are ejected forward on an approximately 20 degree angle from the 90 and at a distance of about 15 feet.
The target was a standard silhouette at 20 M. The first 5/30 round mag (sadly) was used to determine the point of impact with my sight picture and stance. You can see the five outliers outside the main cluster. The remaining 35 (40 rounds total for this target) came together fairly well. I was loading from two different ammunition sources which may account for the cluster separation.
The chamber on the UMP is fluted like the MP5 and P7 pistol series. There are 16 flutes which serve to aid in case extraction/ejection. You can see the flute markings on the casings in the following pic.
Cleaning.
The UMP breaks down in the Lower, Upper, Bolt Group and magazine components. There was surprisingly little fouling after 250 rounds although the commercial Winchester seems to be fairly clean burning.
Here are some close-ups of the bolt face, buffer and lower. I was expecting more residue.
Overall, glad I made the investment. An Aimpoint micro T2 optic will make a world of difference on this sub-gun as opposed to the open sights. I might have to remove the top 1/3 of the sight hood to achieve clear co-witness but we'll see when it arrives and gets mounted.
Ready for another day. I always find the range reports from Master-G very informative so I figured it was my turn to contribute something.
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