My 2nd review of the Primary Weapons piston conversion

[ARin]

I wish they had a low-profile piston gas block that would fit under an existing rail. If they did I would definitely be interested in it. Maybe there is something about the design of a piston system that physically won't allow for it.

i think that is exactly it...seems like the dimensions of the valve would not allow for it.

[blaster22]

I thought you were just taking pictures of my new table!

[Robb Jensen]

I thought you were just taking pictures of my new table!

I was, you should be a carpenter.

[OldNavyGuy]

personally i do NOT like long op-rods, they may be OK, but i see a tendency for bending in a full auto rifle..., of course that is just my OPINION

otherwise very nice looking rifle, if you ARe satisfied, that is all that matters

[militarymoron]

got back my Gen II PWS midlength today - looking forward to getting some rounds through it.

[ARin]

Sending mine out today.

[Derek_Connor]

VERY interesting design...

I'd really like to hear about the suppressed rifle on the "suppressor" setting...

[Razorhunter]

Thanks for posting this info gotm4. Very interesting, as I was totally unaware of this system until just recently. The only one other piston conversion kit like this, which I was aware of, is the ARES conversion system. I know our fellow forum member Seth ?? -somebody did a review on it a while back, and IIRC, he had no problems with it.
Anyhow, a few questions come to mind:

1. What is the cost of this system, for a converted Colt 6920 upper?

2. What piston system is this one most similar to? LWRC? HK? POF? LMT? ARES? MASADA? Bushmaster System? etc, etc.???

3. Is that a DD LITE Rail on the above pictured Colt? If so, it's NOT the 7.0, but rather a little longer, correct?

4. What is the difference between the Gen I and Gen II version you now have?

I am having slight problems with the pages of this forum loading tonight. I still cannot view your other previous review of the Gen I system. Look forward to doing so though.

[TOrrock]

Thanks for posting this info gotm4. Very interesting, as I was totally unaware of this system until just recently. The only one other piston conversion kit like this, which I was aware of, is the ARES conversion system. I know our fellow forum member Seth ?? -somebody did a review on it a while back, and IIRC, he had no problems with it.
Anyhow, a few questions come to mind:

1. What is the cost of this system, for a converted Colt 6920 upper?

2. What piston system is this one most similar to? LWRC? HK? POF? LMT? ARES? MASADA? Bushmaster System? etc, etc.???

3. Is that a DD LITE Rail on the above pictured Colt? If so, it's NOT the 7.0, but rather a little longer, correct?

4. What is the difference between the Gen I and Gen II version you now have?

I am having slight problems with the pages of this forum loading tonight. I still cannot view your other previous review of the Gen I system. Look forward to doing so though.

Just looking at the system it appears to be a long stroke gas system.

Closest relative...the AK system.

Just about every other AR piston system uses a separate piston and bolt carrier, known as a short gas system or "tappet" system, like a FAL, AR-18, HK G36, vz-58, or SKS.

[ARin]

Just looking at the system it appears to be a long stroke gas system.

Closest relative...the AK system.

Just about every other AR piston system uses a separate piston and bolt carrier, known as a short gas system or "tappet" system, like a FAL, AR-18, HK G36, vz-58, or SKS.

pros and cons of short vs long system?