Return to REAR RAIL MODULE (RRM) COMPATIBLE WITH POLYMER80 PF-SERIES FRAMES
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5 of 5 Everything you need March 19, 2026
: Ryan L from Cottonwood, AZ United States  
They have parts that are getting harder to find

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5 of 5 Fits perfectly March 15, 2026
: Charles Barker from Land O Lakes, FL United States  


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5 of 5 Great quality March 15, 2026
: Heather Raposa from Colorado Springs , CO United States  
It was shipped very fast too. I ordered it last and got it first.

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5 of 5 Happy March 1, 2026
: Raymond Huffman  
Was as expected no problems yet. Will order again.

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5 of 5 Fair price and was at my house in 2 days February 26, 2026
: Gav m from Cantonment, FL United States  
Everything was great.  Good price. Super fast shipping

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5 of 5 Rear rail February 20, 2026
: DLB from Isanti, MN United States  
Very satisfied with this product, built very well fits perfectly. Will definitely shop for more

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5 of 5 P80 parts February 20, 2026
: Robert Masengale from Reubens, ID United States  
Clean manufacturing. No rough areas. Fits perfectly. Price friendly as well.

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5 of 5 Exact fit February 8, 2026
: Curtis Gayles from Henderson, NC United States  
It's the exact part I needed for my g19 clone build and the shipping was really fast I definitely will be ordering alot more in the future

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5 of 5 Excellent Quality Part January 24, 2026
: Clifford Rayford from Mobile, AL United States  
I’m glad I bought this part from MAS !!
I got a high quality part at a great price.
You can buy it elsewhere but your sacrificing
Quality and as it’s stated about QUALITY !!
If it’s not broke “don’t fix it and no other company can compete with the MAS quality !!!!
I’m 67 and I’ve wasted my time and money on companies that were in business for themselves and NOT for their customers !!!
MAS is in business for their customers and their customer service is top notch 👍
If you’re ready for a seriously part that’s quality you can see and tell after you install it “ Then MAS is the company you’ve been waiting for !!!
I’m endorsing MAS because I’ve tried the rest but I’ve found the BEST and this is the company I’m using from this day forward !!!

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5 of 5 An old friend December 23, 2025
: from Dunedin, FL United States  
Becoming hard to find Polymer 80 stuff but needed a RRM for a G19 project.  MAS had it and delivered quickly.

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