The Gun Store | Waterbury CT

123544

Pulsar PL79168 IPS 14 Battery Pack Li-Ion, Fits DigiSight Ultra/Forward/Helion/Trail

May 6, 2026
174454

Derya Firearms MELIK9TTTR Melik 9mm Luger 17+1 4.90″ Black Melonite Steel Barrel, Black Melonite Serrated Steel Slide, Silver Anodized Aluminum Frame, Dark Walnut Grip

May 6, 2026

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

$469.37

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

4 in stock

SKU: TSW|184853 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