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Posted: 2/22/2006 9:50:10 AM EDT
[Last Edit: 2/22/2006 12:05:47 PM EDT by cqbdoc10]
I am building a 10.5' SBR, and I am looking for advice on whether to partake the adventure with a piston driven upper such as the LW, or a conventional DI upper such as the CMMG or bushmaster. I am also mounting a suppressor which will be used with the system most of the time, if that makes any significant difference... I have heard that running anything less than a 11.5" DI system with a suppressor can possibly cause problems, and if a piston system would be better for this purpose.

Also, if you could explain technically why or why not to go with either choice, I would appreciate it. Thanks.
Link Posted: 2/22/2006 10:11:28 AM EDT
The advantages of a piston SBR is higher velocity and less gas in your face when suppressed. The downside is obviously cost and proprietary parts.
Link Posted: 2/22/2006 10:17:22 AM EDT
[Last Edit: 2/22/2006 10:19:22 AM EDT by David77833]
Leitner-Wise piston upper, whatever the cost. 5.56 or 6.8mm. You will regret any other decision. The only downside is it might take a while to get it. Contact Darren Mellors at Grenadier Precision.

David
Link Posted: 2/22/2006 10:18:48 AM EDT

Check out the Full Auto forum - most SBR discussions are in there.



Link Posted: 2/22/2006 10:23:32 AM EDT
thanks, I will transfer it over there.
Link Posted: 2/22/2006 10:24:21 AM EDT

Originally Posted By David77833:
Leitner-Wise piston upper, whatever the cost. 5.56 or 6.8mm. You will regret any other decision. The only downside is it might take a while to get it. Contact Darren Mellors at Grenadier Precision.

David



Odd I don't regret not having an LW piston upper on my SBR. nope not one bit o regret.
Link Posted: 2/22/2006 11:06:44 AM EDT
[Last Edit: 2/22/2006 11:07:14 AM EDT by DK-Prof]

Originally Posted By photoman:

Originally Posted By David77833:
Leitner-Wise piston upper, whatever the cost. 5.56 or 6.8mm. You will regret any other decision. The only downside is it might take a while to get it. Contact Darren Mellors at Grenadier Precision.

David



Odd I don't regret not having an LW piston upper on my SBR. nope not one bit o regret.



+1

It's amazing how many people have been using short-barrelled AR's before the latest piston designs, and didn't realize that something was missing.
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