PLEASE NOTE: ONLINE PRICING & STOCK DOES NOT REFLECT IN-STORE
Search Suggestions
The 8" 5.7x28mm Barrel and BCG Kit is perfect for building an AR pistol or SBR in 5.7x28mm using CMMG’s 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 and still provides essential features like last round bolt hold open. CMMG’s 5.7x28mm Barrel and Bolt Kits are designed to be assembled into a Mk4/mil-spec AR15 upper and work with either a CMMG Mk57 lower receiver or Mk4/AR15 mil-spec lower receiver (when using CMMG 5.7 AR Conversion Magazines).
$500.99
2 in stock
(904)-619-1908
sentryfirearmsusa@gmail.com
When purchasing certain items such as firearms online, we are required by federal law to ship them to a licensed federal firearms dealer. The dealer will handle the transfer of these items to you. Learn more about this process here.
| UPC | 810097502406 |
|---|---|
| Manufacturer | CMMG |
| Manufacturer Part Number | 57D88C3 |
| Sights | No |
| Length | 17.4000 |
| Caliber/Gauge | 5.7 x 28 mm |
| Barrel Length | 8" |
| Product Type | Barrel |
Save Up To 15% Off Online
Whether you are a returning customer or first time firearm owner we have a bunch of helpful resources to make purchasing and owning a firearm a simple process. Our team is highly experienced and ready to answer any questions you may have.
Save Up To 15% Off Online
Your experience with us is what matters the most. We believe in offering unbeatable value without compromising on quality or service. Our team is ready to help answer any of your questions or help with purchasing in store or online.
Your experience with us is what matters the most. We believe in offering unbeatable value without compromising on quality or service. Our team is ready to help answer any of your questions or help with purchasing in store or online.
Please contact our store in regard to our store policy. Call or email us.
Returns may very based on product and manufacturer.
Whether you need help with a purchase, have a product inquiry, or have a general question our team is ready to help. Reach out to our team at Sentry Firearms at any time to get the answers you are looking for.
(904)-619-1908
website@sentryfirearmsusa.com
11417 San Jose Blvd, Jacksonville, FL
Your local destination for high-quality firearms, accessories, and outdoor gear. Whether you’re a seasoned shooter or an outdoor enthusiast, we have a large online and in-store inventory.
© SENTRY FIREARMS ‒ ALL RIGHTS RESERVED
