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The Gun Store | Waterbury CT

160996

Girsan 392060 MC1911 S Untouchable Full Size 45 ACP 8+1 5″ Black Steel Barrel, Black Serrated Steel Slide & Frame w/Beavertail & Picatinny Rail, Black Polymer Grip

July 14, 2026
100824

AmeriGlo GL5325 Ghost Ring Sight Set for Glock Green Tritium LumiGreen Outline Front Sight-Green Tritium Rear Sight

July 14, 2026

CMMG 57D88C3 Barrel/BCG Kit 5.7x28mm 8″ Black Chrome Moly Steel

$471.89

CMMG 57D88C3 Barrel/BCG Kit 5.7x28mm 8″ Black Chrome Moly Steel

5 in stock

SKU: CSSI|CA57D88C3 Category:

The 5 5.7x28mm Barrel and BCG Kit allows you to build an AR in 5.7x28mm using CMMGs patented Radial Delayed Blowback operating system. Unlike typical direct blowback systems, Radial Delayed Blowback not only reduces the weight in your BCG but it results in less felt recoil than a straight blowback system. CMMGs 5.7x28mm Barrel and Bolt Kits are designed to be assembled into a mil-spec AR15 Upper and work with either a CMMG Mk57 lower receiver or with a standard Mk4/AR-15 lower receiver (when using CMMG 5.7 AR Conversion Magazines).

UPC

810097502406

Manufacturer

CMMG

Manufacturer Part Number

57D88C3

Barrel Length

8"

Caliber/Gauge

5.7 x 28 mm

Length

17.4000

Product Type

Barrel

Shipping Weight

1.775

Sights

No