LCI Compliant Extended Ported .40 to .357 Sig M&P Shield Conversion Barrel
LCI Compliant Extended Ported .40 to .357 Sig M&P Shield Conversion Barrel
 
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Our Price: $149.99

Stock Status:In Stock

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Product Code: BA-P-MPS-40-357C-EP-CA
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Description
 
A NOTE TO CALIFORNIA RESIDENTS:
We are aware you may have been notified of this item being back in stock. Unfortunately, due to recent legislation, we are not shipping this item with orders that bill to/ship to California, nor orders suspected to be destined for California. We apologize sincerely for this inconvenience.

Remsport LCI Extended and Ported .40 S&W to .357 Sig Conversion Barrel for the M&P Shield.
  • Ports located in the upper quadrant, forward of the slide, aid in evacuation of gasses and create a reduction in muzzle flip that increases follow-on shot accuracy.
  • Designed as a Drop-in Solution, This Barrel Converts Your .40 cal Shield to .357 Sig Without Requiring Fitting.
  • 100% Made in House from Select U.S. Sourced 416 Stainless Steel
  • Precision Broach Cut 1:16LH Twist Rifling
  • CNC Diamond Honed Bore
  • Improved Chamber and Feed Ramp Design for Increased Reliability
  • Barrels are Ferritic-Nitrocarburized (Meloniteā„¢) for an Ultra-Durable Black Finish that is Integral to the Unit's Performance and Function
  • Overall Barrel Length 3.35"
  • Designed to function with models with a loaded chamber indicator, but will function in models without that feature.
  • Lifetime Warranty on All RemSport Mfg Barrels
  • Compatible with both 1.0 and 2.0 Shields


***All parts must be installed by a competent gunsmith. Some fitting and or tuning may be required. Remsport has no responsibility or liability of the final fit and function of the firearm.***


Average Rating: Average Rating: 5 of 5 5 of 5 Total Reviews: 7 Write a review »

  0 of 0 people found the following review helpful:
 
5 of 5 40 to 357 sig conversion for m&p shield January 24, 2026
Reviewer: Jerry Unites from Pittsburgh, PA United States  
Quality seems top notch, shipping was fast. Product is drop in as advertised, and required no additional fitting. Looking forward to putting some rounds downrange thru it.

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  0 of 0 people found the following review helpful:
 
5 of 5 July 27, 2025
Reviewer: Anonymous Person from PA United States  
drop-in replacement with perfect function

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  0 of 0 people found the following review helpful:
 
5 of 5 Ca compliant .40-.357 barrel October 7, 2024
Reviewer: Danny  
If you want extreme firepower get yourself a .357 sig barrel for you m&p shield .40s&w the best caliber for this small package you will be hitting over 1100 feet per second out of this gun better than 9mm better than .40s&w and better than .45acp and better than 30 super carry 100% recommend it.

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  0 of 0 people found the following review helpful:
 
5 of 5 .40- .357 sig barrel July 6, 2024
Reviewer: Lenny Miller from Palm Harbor, FL United States  
Just received my conversion .40-.357 for my S&W Shield and I like the quality as well as the porting and polished feed ramp. Can’t wait to try it out!

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  0 of 0 people found the following review helpful:
 
5 of 5 40 to .357 Sig M&P Shield Conversion Barrel November 13, 2021
Reviewer: Eric W from CA United States  
It fits perfectly, nice machining and finish. The feed ramp has a almost mirror polish. Now if I can just get some ammo to try it out......

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