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Q&A for Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver — 11 Questions & 12 Answers

Name Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver (5)
$1,295.00 $1,165.50 Save 10%
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Q
Sanchez, member, from TX, United States, asked on November 07, 2021

Does it Come with CHARGING HANDLE??

Expert Answer
A
Answered by Hunter, Gear Expert, from OH, United States, on December 27, 2021

The Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver comes with a BCG but not a charging handle.

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Q
Ace, guest, from IL, United States, asked on October 05, 2021

Does this ship with a buffer and spring? If so, what buffer weight?

Expert Answer
A
Answered by Patrick, Gear Expert, from IL, United States, on November 05, 2021

No, this will not come with the buffer weight and spring.

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Q
meh, member, from FL, United States, asked on April 01, 2021

Does this come with the shortened bolt for the pdx? This is confusing. Trying to piece together the pdx kit since it is always out of stock.

Expert Answer
A
Answered by Tom B, Gear Expert, from IL, United States, on September 02, 2021

Yes it does come with the correct bolt for the PDX.

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Q
Jonathan, member, from AK, United States, asked on March 19, 2021

what is the twist rate on the barrel.

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A
Answered by Patrick, Gear Expert, from IL, United States, on November 05, 2021

Unfortunately the manufacturer dose not provide this information, i would recommend reaching out to Maxim directly.

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Q
Jose Trujillo, member, from SC, United States, asked on December 20, 2020

Does this upper work with any lower and any carbine buffer tube?

Expert Answer
A
Answered by Tom B, Gear Expert, from IL, United States, on September 02, 2021

The milspec version is here: https://www.opticsplanet.com/maxim-defense-industries-mdx-505-mil-spec-urg-upper-receiver.html

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Q
Craig, guest, from AZ, United States, asked on November 24, 2020

Will this upper still work with a standard mil-spec lower even Though it has the shortened bcg?

Expert Answer
A
Answered by Tom B, Gear Expert, from IL, United States, on September 02, 2021

You would want the milspec kit: https://www.opticsplanet.com/maxim-defense-industries-mdx-505-mil-spec-urg-upper-receiver.html

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Q
DOGMAN, guest, from AK, United States, asked on September 27, 2020

Is the BCG Full Auto Rated? Also,will this upper run with a Mil Spec Lower with a Binary Trigger Group Installed? Thanks

A
Answered by Ryanh, guest, from FL, United States, on August 26, 2021

I don’t know about the BCG. I’m trying to find that out myself which is how I got here. The lower is mill spec and will work with a binary trigger. As far as the BCG I believe the answer depends on which model you have. It appears they do make some with M16 BCG but I can’t tell when it comes to the BCG used in the SCW system. The are a unique design and much shorter

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Q
Yuriy, member, from IL, United States, asked on August 17, 2020

Is this coming with BCG?

Expert Answer
A
Answered by Tom B, Gear Expert, from IL, United States, on September 02, 2021

Yes this comes with the BCG: **The Maxim PDX U.R.G ships with your choice of a Standard Mil-Spec BCG to be used with most common M4 compatible lowers, or a PDX/SCW compatible BCG buffer and Spring.

The milspec version is here: https://www.opticsplanet.com/maxim-defense-industries-mdx-505-mil-spec-urg-upper-receiver.html

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Q
Alex, member, from TX, United States, asked on March 29, 2020

I assume this will pair with any milspec lower, if that’s the case, do I need to use my own BCG if I’m running a standard carbine buffer?

Expert Answer
A
Answered by Tom B, Gear Expert, from IL, United States, on September 02, 2021

Per the manufacturer: The Maxim Defense PDX™ U.R.G is built to handle the fierce demands of the Tier 1 community and designed to install on any Mil-Spec lower receiver. **The Maxim PDX U.R.G ships with your choice of a Standard Mil-Spec BCG to be used with most common M4 compatible lowers, or a PDX/SCW compatible BCG buffer and Spring.

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Q
Chris, guest, from NV, United States, asked on July 24, 2024

Will this work with a milspec bolt carrier on a milspec lower?

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