Ptr 91 gi cracked trunnion mounted

The unit consists of a trunnion mounted drum manufactured in three ingenious sections, the first section removes gravel and soil, the second sticky products, such as leaves, and the third section large waste, such as pods and soil clods. I was also talking to mack service manager he said they. I was wondering idf anyone out there replaced with aftermarket trunnion that did not require you to slide them in from the back. These include trunnion s 6piece set, 2 trunnion ballsdelrin bearing, 2 hinge plates, 2 bolt, lock washer. Im looking for a traditional looking bipod that will work with a wood hk g3 handguard on a ptr 91. Took it out and ran about 60 rounds through it with only 1 problem that was ammo related and ill get to that in a bit. Picked up a new ptr91 gi mid month and here is my report. I figure if i get a ptr, then this even though its over double the price would be a neat addition to have too. I recently purchased 1998 mack rd 688s dump with cracked trunnion. Yugoslavian m70ab2 underfolder stamped receiver parts set, matching, bulged trunnion, 7.

Bring in your truck or just bring us the beams and we will press in new bushings with our 100 ton capacity hydraulic press. The hammer trunnion accepts milspec ar carbine buffer tubes, enabling you to install any milspec collapsible stock on your ak variant. Rtg parts was established to provide increased customer access to top quality military surplus parts, magazines and accessories. Windmill sales representative will contact you within 24 hours. A trunnion from old french trognon, trunk is a cylindrical protrusion used as a mounting or pivoting point. These are amazing part sets, complete less the stamped receiver and barrel. Making objects with this type of integrated support can be challenging, but the superior strength and support. Ive already got my dream ar 97% set up as ive always wanted, but as the title says, im thinking about picking up a ptr91 for a proper heavyhitter mbr. Nonremovable antistatic devices assure electric continuity between ball and. The performance of 9mm out of a 16 barrel seems quite adequate, the same manualofarms as the 91, a longer sight radius than a usual mp5, less expensive ammo though more expensive magazines, etc. Im just simply amazed by whole casting vs forged ak trunnions discussion. These instructions do not cover all details or variations in equipment nor do they provide for every possible situation during installation, operation or maintenance. Soft trunnions gave shifting bolt gapsno head space on a roller locked operating system, cracked trunnions.

We offer the very best quality tailgate hinge trunnion upgrade for your chevygmc c10, c20, c30, blazer, jimmy, fleetside or stepside trucks. Ive heard rumors of a couple people having cracked trunnions. Originally posted by seronian here is my conversation with ptr today, i explained that gun law in cali sucks minor mod had to be done for one to own a ptr qc issues. Trunnion mount hydraulic cylinder design and manufacturing. This is a hydrostatic bearing which is a slow moving bearing that carries a heavy load. Picked up a new ptr 91 gi mid month and here is my report. This is the ptr91 gi variant, factory product code 915301. I purchased from atlantic arms, good service and quick. Kits include the steel mounting pins for the front sight, gas block installed and the pins used to. These supports are used on a wide variety of objects and devices, and they are usually designed to be an integral part of a device for added stability and strength. Mechanical engineering one of a pair of coaxial projections attached to opposite sides of a container, cannon, etc, to provide a support about which. All of ptrs parts are manufactured on the top of the line equipment and to the strictest standards in the industry. A pin or gudgeon, especially either of two small cylindrical projections on a cannon forming an axis on which it pivots. Its on its way to my ffl dealer, and i have a couple upgrades for it.

Nonremovable antistatic devices assure electric continuity between ball. Looking for online definition of trunnion or what trunnion stands for. The torque requirements of a trunnionmounted ball valve are significantly less than for a floating ball design. A trunnion is a protrusion that is utilized as a mounting point. Apr 05, 2016 im looking for a traditional looking bipod that will work with a wood hk g3 handguard on a ptr 91. One gi, which cracked the trunnion as one of the hardness problem guns, ptr fixed that in a week turn, and its been fine since. This is a misnomer, as in reality it is a cradle for the true trunnion. Yugoslavian m70ab2 underfolder parts set, matching, bulged. I just got a new ptr91 gi model without the top rail off buds gun shop. I am a ffl and if shipping item must ship to ffl for transfer. Lee industries offers custom blenders the drip oil system for the trunnion also plugs occasionally, causing metal grinding with subsequent repairs. Before we move on to the other components of the ptr91 gi rifle, i wanted. That said, ptr bought hks old machines and shipped them to the us to use in their factories, so i like to think of them as just merican hks.

Complete stainless steeldelrin set these are the highest quality trunnion hinges set on the market today. Hk91s and, until recently, ptr91s used steel g3 type lower receivers, with a separate plastic pistol grip. I just got a new ptr 91 gi model without the top rail off buds gun shop. Remanufactured in the usa by ptr and is designed to be a direct replacement for all.

These are all the best, high quality trunnion hinges on the market. This rifle has been further developed and improved over the years into the high quality. Apr 28, 2020 a trunnion is a protrusion that is utilized as a mounting point. This eliminates the need for the old style claw mount that put the scope waaaay above the bore axis.

Trunnion definition is a pin or pivot on which something can be rotated or tilted. Trunnion article about trunnion by the free dictionary. The polymer trigger group you refer to is simply an allplastic lower, with the lower and pistol group molded as a single part. The gi models havel g3 spec barrels and are installed with the. Ptr qc issues, new gi model with cracked trunion page 2. Ptr ptr 91 steel grip housing with plastic and semiauto. Three piece forged trunnion three piece forged trunnion mounted ball valvemounted ball valve. I would love a free floated ptr 91 at some point, so i probably will pull the.

Hk91s and, until recently, ptr 91 s used steel g3 type lower receivers, with a separate plastic pistol grip. You will need to reuse your original mounting hardware or purchase new hardware. The new ptr91 rifles have, as an option, a picatinny rail mounted to the top of the receiver. For testing very large or complex payloads, we recommend a standalone trunnion mounted shaker with a separate slip table on a seismic base. The fcg fits inside the lower and is held in place by the selector switch. Metallurgical contentball mill trunnion bearingstrunnion bronze bushingstrunnion base and capball mill lubricant jacksball mill pinion shaft bearings the first part of the mill that we will look at is the trunnion bearing.

Ive always wanted one to my long wingspan, the ergonomics are great. The vw1 is a api 6dcompliant, weldedbody valve that seals off both seats at the same time and allows bleeding of the entrapped. Thats a steel lower which allows you to install whatever grips are out there, or make your own. Named for the trunnion historically used to support a cannon, a ball valve trunnion essentially doubles the safety and usability of a ball valve the trunnion feature is common to many better quality metal ball valves, but in plastic, is found only on plastomatic true blue brand ball valves. Love my ptr 91, dont care what anyone says, i think its the best semiauto. Trunnion mounted side entry, cast steel, full bore asme class 150 f a e f 6 inches and smaller lever operated a weights of welded body weldingend valve style a e ob of of e a ob 12 and smaller 14 and larger size a weight inches rf bw rtj ob e f kg 2 178 216 191 51 188 410 11 3 203 283 216 76 229 510 18 4 229 305 241 102 260 700 38. Ive seen hks, ptrs, cetmes with high optics mounts, big scopes and. Aks with cast trunnions drama ak operators union, local 4774. Iron hammer armory ak47 hammer trunnion we like shooting. This is the ptr 91 gi variant, factory product code 915301.

K metal trigger group housing, 58x24 barrel threading as well as a paddle magazine release. I also could not get my arms hk type claw mount to fit the ptr. Ptr gi classic rifle wo rail ptr gi 100, click image for detail. Various options may be added, including streamwater jacket, insulation, scraper blades, flush mounted ball valves and trunnion tilting. Hk91, g3, barrel and trunion, pin, hk91, g3, hk, ptr91. Thank you for your interest in our cs trunnion type ball valve products. Originally posted by seronian here is my conversation with ptr today, i explained that gun law in cali sucks minor mod had to be done for one to own a ptr qc issues, new gi model with cracked trunion page 2. Ptr91 grips northwest firearms oregon, washington, idaho. The valbart vb2 and vb3 are repairable, bolted body, sideentry, trunnionmounted ball valves featuring a fixed ball and floating seat rings. It looks like i might be able to mount a fal bipod to the barrel. When used with a second gimbal mount in the orthogonal it becomes a universal joint and therefore effectively self aligning in three axes.

Ptr pdw 91 sbr question my question is when i get stamp back is it as easy as just replacing the endcap with a butt stock and have all proper markings per atf rule placed on the barrel or what is required when just replacing the end cap on a pistol rifle concerning markings or is the end cap a special one that requires smithing to get a. Cleaned it, checked bolt gap and out of the box it sat at. Rtg parts was established to provide increased customer access to top quality military surplus parts, magazines and. The torque requirements of a trunnion mounted ball valve are significantly less than for a floating ball design. A device having a fourpoint connecting rod mechanism 3 for joining a converter shell 2 and a trunnion ring 1 comprises four connecting rod mechanisms 3 distributed symmetrically along the trunnion axis of the ring 1 at an angle of a, two sets of upper blocking mechanisms 4 are set on top of the ring1 to its trunnion axis side, two sets of lower blocking mechanisms 5 are set on.

Something like this but works with the wood handguard. The ptr gi rifle has been very popular and is also offered in a non railed classic model shown below. Firesafe design, trunnion ball with spring loaded seats, blow out proof stem, flanged connections. The part of a ball valve that holds the ball on a fixed vertical axis and about which the ball turns. Oct, 2015 im just simply amazed by whole casting vs forged ak trunnions discussion. Purchased a ptr91 gir rifle from atlantic firearms a few weeks ago. I started digging around and found the ptr91 gi, with a milspec chamber for proper.

As i understand it, the cracked trunnions were a problem with early ptr. To tight and trunion cracks and bolt gap shrinks, to loose and the. Most if not all ptrs these days come with the navy lower which is a one piece housing including the grip and all you can do is add a rubber slip on over grip like a piece of innertube, etc. The polymer trigger group you refer to is simply an allplastic lower, with the lower and pistol group molded as a. Ptr91 incthe cracked trunions were post jld rifles. Rtg parts llc has been family owned and operated since its inception in 1999. The accuracy was fantastic by my standards 5 groups at 200 yds. When ar crowd, basically root out and brutally laugh it out any manufacturers who are not following mil spec and not making ars components stronger, here in ak world, we are trying to justify cutting corners in manufacturing process on part which is the spine of akall this is justified by statements like. Alternatively, a trunnion is a shaft that positions and supports a tilting plate. Apr 12, 2011 thats a steel lower which allows you to install whatever grips are out there, or make your own. Trunnion design is simply the use of upper and lower supports to retain the ball under pressure. Three piece forged trunnion three piece forged trunnion. First associated with cannons, they are an important military development. Ptr brought out a new version of their ptr91 line that specifically addresses those issues.