Search results

  1. MSTN

    Bolt carrier for precision AR-15

    I used to use the Young Mfg. N/M bolt carriers for precision applications. I'd get the bolt carrier, LMT bolt, and the gas key Ionbond DLC coated: Currently, JP makes the bolts in the sizes I need already Ionbond DLC coated. Easy button:
  2. MSTN

    Defective Gas Port?

    Gas port erosion is a part of life if you shoot a gas gun. They all do it - some in different fashions - and at different rates. And all 416-R barrel blanks are apparently not equal. Have you ever had a new, fancy SS barrel that shoots absolutely lights out initially - And then shoots like...
  3. MSTN

    18" 22ARC

    18" Proof SS 22 ARC barrel and Hornady 88 ELD-M. Sample size 15 RD. Brand new barrel - Will most definitely speed up. SD should come down.
  4. MSTN

    6 arc buffer

    No, I'm sorry, but I can't. I have a 70% hearing loss. I hear nothing from any type recoil system.
  5. MSTN

    Geissele GFR Maritime Reconnaissance 6mm arc write up and review

    I'm betting Geissele went with longer "NATO" type throats for reliability. With Proof CF barrels and an older lot of Hornady 108 ELD-M: 14.5" 2560 FPS 18" 2660 FPS Current batch is a lot slower in 18". Haven't tried it in the 14.5". The older lot was also noticeably temperature...
  6. MSTN

    6 arc buffer

    I'm not smart enough to answer this, but I know the guy who designed the Vltor A5 recoil system, or the newer, upgraded BCM MK 2 recoil system. The big advantage of the is the plain old rifle length recoil spring. It lasts infinitely longer than a carbine length recoil spring and just plain...
  7. MSTN

    Geissele MK8 Rail vs KAC URX ?

    The current Geissele rails are superior in every respect.
  8. MSTN

    Geissele MK8 Rail vs KAC URX ?

    Which URX rail? There have been four versions. The URX 3 was always my favorite. I built up quite a few ten or so years ago. It was unique and far ahead of its time.
  9. MSTN

    Geissele GFR Maritime Reconnaissance 6mm arc write up and review

    A good friend built a high end bolt gun with Proof barrel that would not group better than 1.5 MOA. Disappointed, he contacted Proof Research - and was told to try a different lot of ammo. That solved the problem. I've been through multiple lots of Hornady factory ammo. I've personally not had...
  10. MSTN

    PRI MK12 Douglas Barrel?

    I bet you spoke with Shawn. PRI personnel have refurbished over the last 20 years a number of the Army's MK 12's at Ft. Campbell. So, in a sense, a good number of dead terrorists have had experience with them...
  11. MSTN

    Geissele GFR Maritime Reconnaissance 6mm arc write up and review

    Thank you for the time and trouble you devoted to this very interesting review. My guess is Geissele is going with a longer throat to enhance reliability in their C/L barrels. One unintended side effect of a longer throat is a slightly lower velocity. Hornady 6mm ARC ammo velocity tends to...
  12. MSTN

    Best flow through suppressor

    My older OSS HX-QD Ti with open end cap has performed well on numerous 5.56, 6mm ARC, 6.5 CM, and .308 gas guns. It might not be the quietest can in the world, but it is light in weight, has low back pressure, and produces excellent accuracy. It's also quite versatile in that it can be used in a...
  13. MSTN

    Question about 13.9in vs 14.5in

    MILF DOTS SAID: I know it's gotta be at least 16.1 inches to be legal, but I'd like to have the shortest possible rifle after installing any suppressor, and I'm thinking a 13.9 would result in a shorter suppressed rifle by about .6 inches, compared to the 14.5- or am I wrong? Muzzle devices...
  14. MSTN

    2024 Updated List on Billet Receiver Set Manufacturers

    MSTN said: San Tan Tactical just isn't the same quality since it was moved from Phoenix to Ft. Worth. Sharps Bros. stuff is impressive: https://sharpsbros.com/livewire-ar15/ https://sharpsbros.com/sbur04-billet-upper-receiver-ar15/ The livewire lowers are now forged. Still good to go? Yes...
  15. MSTN

    Question about 13.9in vs 14.5in

    With the 13.9" barrel, compared to a 14.5" barrel, using the SAME length muzzle device, you end up with a 0.6" shorter rifle. This is a Criterion 13.9" C/L barrel with OSS/HUXWRX extended flash hider (P/N 2885), producing a 16.2" barrel: The Flow 556K when installed does clear the handguard...
  16. MSTN

    SOLD MSTN built AR15 with 16” Proof Carbon barrel

    New price $3850. Plus shipping.
  17. MSTN

    SOLD MSTN built AR15 with 16” Proof Carbon barrel

    Totally unsolicited input here: I can't get San Tan Tactical billet receiver sets quite that good any longer... This is a good deal.
  18. MSTN

    Bolt Carrier Group impact on accuracy?

    The old Young National Match bolt carrier was literally fantastic - Forged, then centerless ground, then chrome plated. Not being inclined to stop there, I've been sending them to Ionbond for DLC coating since 2004: Wish they still made them like that! Yes, that's a JP bolt in there, also now...
  19. MSTN

    Accurate gas gun 6.5 cm barrels under 750$?

    Long Range Accuracy Ultralite F-Class Picatinny Bipod: https://lraccuracy.com/collections/bipods/products/model-002-ultralite-f-class This design is about a dozen years old. They used to be so hard to find that ten years ago, in order to get my hands on my first one, I had to buy the rifle...
  20. MSTN

    308 AR10 Build Info/Picture Thread

    Just finished hammering together another really nice 6.5CM: Seekins SP10 Builder's Kit, done up in Accuracy Int'l Dark Earth Cerakote; Rock Creek 5R SS barrel by Craddock Precision; SLR adjustable gas block; JP FMOS bolt carrier group; JP H2 Silent Captured Spring Kit. I thought I'd see if it...