Recently I started looking into PTR and their rifles after I heard that they were leaving their home state in protest of new gun laws. When I got to their web page and found they were making G3/HK91 style rifles I was intrigued. Delays have always been a point of interest for me. But when I read the technical descriptions of their guns I found something completely out of place. They claim their action is a "Delayed Blowback Roller-Lock System." (See for yourself http://ptr91.com/products/PTR91F?id=1) Locks and delays are not the same thing and both a Roller Delay (like the G3/HK91) and Roller Lock (like the CZ 52) exist. Thinking they may have modified the design I shot them an E-mail.
"Hello, over the last few months I've been seeing an increasing number of your rifles at local gun stores and been hearing great things about them. Delayed actions have always been a favorite of mine. There is however one point I am confused on. On your web page it describes the weapons' action as "Delayed Blowback Roller-Lock System." I have always been under the impression that a Roller Lock and a Roller Delay were two distinct methods of operation. Do your weapons use the HK91 style action or have they been modified in some way, possibly pushing them closer to the CZ 52?"
Here's what I got back two days latter...
"Hi Patrick,
Thanks for getting in touch with us.
Our rifles use the same operating system as the HK 91. It is in fact a delayed blowback roller-lock platform."
Okay, I understand that their guns use a roller delay. But what's with the off the wall terminology? I recall seeing a few other companies over the years that have had similar cases. Sometimes I get it when an action is truly bizarre like the AN-94's "Blowback Shifted Pulse" (translated Russian and possibly not considered to be the full description of the weapons action.) Got any theories on this one?
"Hello, over the last few months I've been seeing an increasing number of your rifles at local gun stores and been hearing great things about them. Delayed actions have always been a favorite of mine. There is however one point I am confused on. On your web page it describes the weapons' action as "Delayed Blowback Roller-Lock System." I have always been under the impression that a Roller Lock and a Roller Delay were two distinct methods of operation. Do your weapons use the HK91 style action or have they been modified in some way, possibly pushing them closer to the CZ 52?"
Here's what I got back two days latter...
"Hi Patrick,
Thanks for getting in touch with us.
Our rifles use the same operating system as the HK 91. It is in fact a delayed blowback roller-lock platform."
Okay, I understand that their guns use a roller delay. But what's with the off the wall terminology? I recall seeing a few other companies over the years that have had similar cases. Sometimes I get it when an action is truly bizarre like the AN-94's "Blowback Shifted Pulse" (translated Russian and possibly not considered to be the full description of the weapons action.) Got any theories on this one?