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Posted: 1/20/2009 7:47:59 PM EDT
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What are the current Options?
POF: Simplicity. This one is simple. No springs to break or lose. The current system (not pictured) has one less part than the one pictured and the gas regulator turns 90 degrees to switch between Suppressed and unsuppressed. Again, of all the systems I like this one the best. OLD POF System: 
NEW POF System: Note the manufacturer has combined two parts into one. This allows the user to select two gas port posistions for Suppressed and unsuppressed fire. LWRC: A well sorted out system. Far along the engineering curve. 
HK 416:This upper is probably farthest along the engineering curve of all the uppers. 
Adams Arms: Drop in. Most interesting thing that I saw was a spring between the bolt and the bolt carrier. This could help moderate cyclic rate, but I really don't understand the need. I was told that Adams Arms has been chosen by Smith and Wesson as the piston for thier new Piston rifle. 
PWS: Long Stroke Kalashnikov style system. This is the only one of the piston systems that truly departs from the others. 
ARES DEfesne GSR-35 (Black Lightning): Discussed Extensively In this Thread Bushmaster apparently went with this system for their Piston uppers this year. 
Who did I miss? Anyone remember the POF v. LWRC wars? Now its a lot harder to answer who's system is the best. |
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For me its POF, for two of my friends its LWRC. I like both systems. Its intersting how PWS is the only manufacturer to depart from the general short stroke idea. IIRC there is another long stroke system out there. It is made by a company that specializes in older machine guns, the name escapes me. |
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Addax Tactical is also another contender. They Utilize the piston system from PWS....but do not simply drop in a conversion kit. Addax has worked with PWS and has improved on their design, as well as engineered GPU's around the PWS system. I have an LWRC and an Addax tactical and i absolutely love both.
If one were to take apart an Addax GRU, one could see that it is simply just not a regular retrofit system. There are bigger ported holes for the gas block to be able to retrieve enough gas to push the operation rod ALONG with the carrier. All the other systems thus far, puch the operation rod INTO the carrier. This seems to result in much less carrier tilt and wear. After abusing many GPU's, i would have to say that the best ones are the Addax GPU's along with the PWS. The LMT is also a nice one that i have fired and enjoyed |
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Nope. I own one...and have handled many other systems. There is no comparison. You get what you pay for. Maj You don't necessarily get what you pay for when there's an artificially limited supply. The HK may or may not be the best, but the $4000+ price tag is not a result of the manufacturing quality. |
What is that piece that looks like a section barrel in the HK pic? It almost looks like something you'd screw onto that 10.5" barrel to make it a 14.5", although I've never heard of anything like that. The 14.5" HK upper I used to own ( ) didn't have that piece.
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Looks like a barrel extension to bring the 10.5" length to 14.5". I've never seen that before either. Maj Wouldn't it be virtually impossible to line up the threading so that the rifling inside is unbroken? A c-hair of tension more or less would have the rifling out of line. Naw, it can't be........ |
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Looks like a barrel extension to bring the 10.5" length to 14.5". I've never seen that before either. Maj Wouldn't it be virtually impossible to line up the threading so that the rifling inside is unbroken? A c-hair of tension more or less would have the rifling out of line. Naw, it can't be........ I see what you're saying...and makes sense. I'm not sure how the rifling would line up...maybe the extenstion doesn't have rifling in it? I'm guessing here.... |
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TNW Short Stroke: Review of TNW system here http://img.photobucket.com/albums/v11/DavePAL84/projects/GP9.jpg http://img.photobucket.com/albums/v11/DavePAL84/projects/GP8.jpg. Hard to call it a review with no range time... I'll be quite surprised if that roll pin holds up over time. |
+1 for LWRC, here is a pic of my 16" M6A2. I wish we could have SBR's in WA because the PSD would be way too much fun I picked it up just before the madness and paid a very fair price. Under 2K NIB. It now has just at a 1000 rds through it with only one fail to feed. Not sure why it did that, it did dent the shit out of the casing so I just ejected it and kept on blasting. It is the one I am shooting the most right now.
Sir James... |
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