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Correct scope mount for PTR91

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#21 ·
For what it's worth, I just zeroed my PTR 91 with the UTG mount.
It did just fine, with no evidence of walking and it held zero.
Since I only had time for a few rounds, I need to get back out
to the range to observe whether or not it holds after 100+ rounds.
 
#22 ·
Right on. Let us know how she does after some more shooting, thx
 
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#23 ·
I have an aluminum-clawed MFI, it kept losing zero. i was ready to ditch the thing and instead decided to call the manufacturer. i spent about 30-40 minutes on the phone with Mike (?). he explained part of the problem was that the claw mount on the left side of my PTR wasn't milled properly; it was rounded on the bottom instead of square as it should be, and was on the right side.

i took the PTR to my 'smith, who put it on a drill press and used a bit to remove the right amount of material to allow the claw to grab on the left side.

it holds zero quite well, now, even taking my LaRue quick-release and EoTech on/off each time i clean it. the next time i go out, the first shot is dead on.

so good on laRue and MFI, imo their stuff works as advertised.
 
#25 ·
chauncey said:
I have an aluminum-clawed MFI, it kept losing zero. i was ready to ditch the thing and instead decided to call the manufacturer. i spent about 30-40 minutes on the phone with Mike (?). he explained part of the problem was that the claw mount on the left side of my PTR wasn't milled properly; it was rounded on the bottom instead of square as it should be, and was on the right side.
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Mine had the exact same problem on my PTR receiver. I used a drimmel with small end mill and carefully flattened mine. MFI mount now tightens up properly but I have yet to really test it. My bolt broke after 30 rounds so i am waiting for the rifle to be returned to me from warranty repairs. :(
 
#28 ·
Hk or ptr rec. are supposed to have right angled feet on the right side and 45* degree angle on the left,when your behind the rifle. If some gunsmith told you its supposed to be right angled on the left,then he is lying to you and does not know specs. of hk or ptr receivers. You should not have modified your rec. ; because now an hk claw mount will never fit right. I,m sorry,but your smith is WRONG. Youy have depreciated your weapon to a collector. UTG mount is garbage,B&T is millitary and used all over the world in BATTLE. Your receiver was exactly as it was meant to be,sorry to break it to you.
 
#29 ·
I just installed the UTG P668 mount (the one that looks like the B&T mount) and it seems very solid. I don't think the new one (P669) mount will work for the .308 rifles, as you have to turn it around, and the feet are different on both sides.
 
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#30 ·
Whatever, but there was nothing wrong with the receiver cuts on these 2 guy,s receivers,I just talked with TYLER from Scorpion arms and he is now selling the correct military battle proven scope mnts from B&T. The mfi mnts dont even stay zeroed either. I just dont think alluminium feet to a steel receiver are going to stay tight after months of shooting .308,eventually it wiil strip out. B&T for me guy,s, but you may not shoot as much as me;so go head and buy chinese parts for your1000$ rifle. Your choice.
 
#32 · (Edited)
tcr39 said:
Hk or ptr rec. are supposed to have right angled feet on the right side and 45* degree angle on the left,when your behind the rifle. If some gunsmith told you its supposed to be right angled on the left,then he is lying to you and does not know specs. of hk or ptr receivers. You should not have modified your rec. ; because now an hk claw mount will never fit right. I,m sorry,but your smith is WRONG. Youy have depreciated your weapon to a collector. UTG mount is garbage,B&T is millitary and used all over the world in BATTLE. Your receiver was exactly as it was meant to be,sorry to break it to you.
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This is nice to know, after the fact. Since I bought the MFI mount from HKParts. No where in the add does it say that 1/2 the mount won't work. The part that grabbed my eye was, in the add, --> 4 - Independent Draw Style Hooks for 100% Secure Attachment. That add maybe right after I modified that one side of the receiver. I guess sometimes I need to learn the hard way.

I assumed that PTR screwed the rcvr up since my bolt broke after 30 rounds. Guess that was not the case. IF tcr39 is correct and probably is, there are alot of people , like me, that need to be informed. Never heard of this until now.

AS of now I am satisifed with the weapon. MFI mount with old Leatherwood ARTII scope (scopes worth more than the rifle) shoots dead on. I have put 100 rounds of silver bear thru it. No movement from the mount. I don't plan on selling the rifle so collector value means nothing to me from that perspective. If it was a true pre 89 HK91, I probably would have known better since it came from HK and I would have questioned the one side of the rcvr. Like I said, since the bolt broke, I assumed there could be other problems. I still wish that it would shoot cheap surplus ammo but, what the heck.

What I don't understand is all the 5 star ratings on this MFI mount HKParts is selling. How did all these people get their MFI mount to work? Everybody grind away at their receivers?

Worse case is I can replace my AR15 with it and use it around the house with open sights out to 90 yards :)
 
#33 · (Edited)
The MFI mounts seem to work some of the time,but the alluminium screws and feet were stripping out. Then they re-did the feet on the mount a little different so people would be more inclined to buy them . ADAM at hk parts had a cotract type deal with MFI to buy a bunch of them to sell to PTR/ hk91 owners. Now,a few years later;people are finding out they DONT last long enough to be considered military grade.TyLER at scorpion arms also told me that he was getting alot of calls with negative feedback on the MFI mounts also. He has discontinued sales of them since. The UTG low profile feet on the p669 mount are on the wrong side to be used on a G-3/91 style receiver,I have not tried the p668 model that looks like the B&T. The left side of an in spec. rec. should be slightly angled to accept a hk claw mount., so you can roll down the clamping lever. If you do your research,you,ll see that I am correct. Norway,denmark,spain,germany,france,mexico,sweden,latvia and many more countries all use both the LONG and SHORT B&T swiss made mounts. The B&T mounts are battle proven,UTG and Mfi are not,maybe for airsoft or MP5,9mm caliber rifles,but not .308 caliber rifles. AS long as your happy with it,then enjoy. But,remember UTG/MFI are not MIL.SPEC quality. Sorry you guys ground on your weapons,NEVER alter the rifle. PTR is now selling B&T military grade mount. Have fun and enjoy your rifles. Remember, steel feet to steel receiver is going to bond if tightened down correctly and should never move. These Chinese made aluminium mounts are not going to hold up if you shoot alot and hunt with these weapons.
 
#35 · (Edited)
tcr39 said:
The MFI mounts seem to work some of the time,but the alluminium screws and feet were stripping out. Then they re-did the feet on the mount a little different so people would be more inclined to buy them . ADAM at hk parts had a cotract type deal with MFI to buy a bunch of them to sell to PTR/ hk91 owners. Now,a few years later;people are finding out they DONT last long enough to be considered military grade.TyLER at scorpion arms also told me that he was getting alot of calls with negative feedback on the MFI mounts also. He has discontinued sales of them since. The UTG low profile feet on the p669 mount are on the wrong side to be used on a G-3/91 style receiver. The left side of an in spec. rec. should be slightly angled to accept a hk claw mount., so yuo can roll down the clamping lever. If you do your research,you,ll see that I am correct. Norway,denmark,spain,germany,france,mexico,sweden,latvia and many more countries all use both the LONG and SHORT B&T swiss made mounts. The B&T mounts are battle proven,UTG and Mfi are not,maybe for airsoft or MP5,9mm caliber rifles,but not .308 caliber rifles. AS long as your happy with it,then enjoy. But,remember UTG/MFI are not MIL.SPEC quality. Sorry you guys ground on your weapons,NEVER alter the rifle. PTR is now selling B&T military grade mount. Have fun and enjoy your rifles. Remember, steel feet to steel receiver is going to bond if tightened down correctly and should never move. These Chinese made aluminium mounts are not going to hold up if you shoot alot and hunt with these weapons.
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I do have the steel feet on my MFI mount and it still would not grab properly on that side of the receiver. No way. It had to be lightly slotted at the base of the pad for the mount to work. I did not cut the complete pads off the side of the receiver. Matter of fact, you can't really tell what I did. Very little metal was removed. 90% of that angled pad is still there. If what you say is true then the factory mount will still work on mine. My original intention was to never scope the rifle. I don't like the claw mount at all and I have a few scopes I can use. I like the way the MFI low mount works and looks. As far as mods to the receiver, I will do what I need to do to make something work to suite my needs. I have collectable's that I won't make mods on but the PTR is not part of that collection and never will be. If it said HK on the receiver then, that would be different. :)
 
#36 ·
Cool SALTYDOG, atleast you know what I,m talking about and that I,m telling the truth. I,m glad you didnt grind your receiver. PTR receivers are made on HK contracted tooling and are the same spec. as HK,FMP,EBO. The german made CLAW mount actually works the BEST,even if you dont like it. It stays rock solid and zeroed every time for years on my PTR91k. The claw can accept stanag rings for a regular scope,and you can still have use of IRON sights. You just cant beat the original set-up, IT WORKS THE WAY ITS DESIGNED FOR MILITARY USE. If the B&T dont work for me,I,m going to buy another claw w/stanag rings and use a tube styled scope;variable or fixed power;end of thread.
 
#39 ·
swyper said:
Anybody check out this mount?

http://www.hkparts.net/shop/pc/B-T-Style-Universal-Picatinny-Scope-Rail-5p79.htm

All reviews on the website say they are good to go.
Click to expand...
That is the one I am currently using. It is a B&T knock off make by UTG. Unlike the newer version (P669) this version (P668) has worked fine for me. It does not have the angled feet issue of the newer one. It has held zero very well with a red-dot. I am going to try some higher mag optics on a set of throw-lever rings and I'll let you guys know how she holds up, but it will probably be a while. One of these days I might get an actual B&T mount, but for now this thing is working well.
 
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#40 ·
tcr39 said:
Hk or ptr rec. are supposed to have right angled feet on the right side and 45* degree angle on the left,when your behind the rifle. If some gunsmith told you its supposed to be right angled on the left,then he is lying to you and does not know specs. of hk or ptr receivers. You should not have modified your rec. ; because now an hk claw mount will never fit right. I,m sorry,but your smith is WRONG. Youy have depreciated your weapon to a collector. UTG mount is garbage,B&T is millitary and used all over the world in BATTLE. Your receiver was exactly as it was meant to be,sorry to break it to you.
Click to expand...
Glad to hear this - I thought the receiver on my JLD91 was "off" - Thanks bro
 
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