This complete assembled Mike-45 Glock-style lower receiver combo comes with an RMB (Recoil Mitigation Buffer) installed, with an A5 buffer tube. The addition of the RMB really compliments the recoil reduction on a 45 Caliber PCC build, smoothing out, and softening felt recoil.

A great option for a builder who already has a standard (non short-stroke) PCC upper they want to use. The RMB is designed to work with an A5 Buffer Tube with PCC uppers that are not “short stroke style.” For users with a VFM-series upper you may prefer a standard Carbine Buffer Tube—see fitment guidance for your specific upper.

The RMB offers consumers the best results for recoil mitigation and reliability. Foxtrot Mike Products, a trusted name in firearm innovation for over nine years, proudly presents the RMB (Recoil Mitigating Buffer) System tuned specifically for .45 ACP pistol-caliber carbine (PCC) platforms. The RMB is a proprietary buffer system that dramatically improves performance, accuracy, and shooting comfort — while maintaining the affordability and reliability that Foxtrot Mike is known for.

• At the core of the RMB is a finely tuned reciprocating mass that eliminates bolt bounce — a long-standing issue in traditional blowback-operated PCCs. Combined with a sliding buffer body, a dampening spring, and a durable urethane impact modifier, the RMB system delivers a soft, controlled recoil impulse that users will feel immediately. High-speed video testing has shown the RMB eliminates bolt bounce in properly matched PCC builds. No +P or +P+ ammo was used for testing.

“Recoil Mitigation = Accuracy & Reliability.”

This is the guiding principle behind the RMB and the legacy Foxtrot Mike Products has built over nearly a decade of pushing the envelope. From proprietary in-house designs to widely respected white label OEM manufacturing, Foxtrot Mike Products has a rich history of developing reliable, economical, and feature-rich solutions for firearm enthusiasts and industry partners alike. store.fm-products.com

In collaboration with industry experts and insights from authorities on blowback dynamics, the RMB was rigorously blind-tested — and the results speak for themselves:

• Noticeable recoil reduction compared to standard heavy buffers
• Improved shot groupings during rapid fire
• Complete bolt-bounce elimination verified by high-speed video (in matched test setups)

FM performed extensive reliability and bolt bounce testing on PCC platforms; longer barrels and differing upper designs may affect results. The best recoil mitigation is achieved when the RMB is matched to the correct buffer tube, spring, and upper configuration. There are many variables in a PCC build; individual results may vary depending on your setup. store.fm-products.com

Whether you’re assembling a new .45 PCC or upgrading an existing platform, the Mike-45 with RMB offers a superior solution for smoother shooting, better accuracy, and increased system reliability. Great for use with a suppressed build, and compliments 45 Caliber because its subsonic

The Mike-45Complete Lower receiver is a Glock-magazine compatible Pistol Caliber Carbine lower, housed in the familiar AR-style complete lower receiver. The Mike-45 boasts a patented bolt hold-open mechanism (not based on bent sheet metal), providing a reliable and durable solution to the common problem of bolt hold-open failure.

The Mike-45 Complete Lower Receiver is a feature-rich, premium-quality Glock-compatible PCC lower — a great starting point for your unique build.

FEATURES:

• CALIBER: .45 ACP
• LOWER RECEIVER: Machined from aircraft-grade aluminum with MIL-SPEC Type III hard anodizing
• PISTOL GRIP: A2
• BUFFER: RMB (Recoil Mitigation Buffer) — optimized/tuned for .45 ACP operation
• RECOIL SPRING: Carbine recoil spring (recommended configuration provided with product)
• BUFFER TUBE: MIL-SPEC diameter A5 tube (RMB designed for A5 configuration on standard non-short-stroke PCC uppers)
• STOCK: No stock (brace/stock compatible per user preference)
• TRIGGER: Curved mil-spec (style may vary)
• CONTROLS: FM-Products ambidextrous bolt catch
• LENGTH (INCHES): 14 1/2" (complete lower length)
• WEIGHT (LBS): ~2 lbs (complete lower)
• COMPATIBLE WITH .45 GLOCK-STYLE MAGAZINES (Glock-compatible .45 mags)
• BEST LAST-ROUND BOLT HOLD-OPEN AVAILABLE (patented design)
• PREMIUM 3D-MACHINED EXTRA-WIDE MAGWELL FOR EASY MAG CHANGES
• BILLET MAGAZINE CATCH
• STEEL EJECTOR
• COMES FULLY ASSEMBLED

Lifetime warranty on all Foxtrot Mike Products.

Note: Must be 21 or older to purchase. Know your local laws before purchasing. The customer is responsible for providing correct FFL information. FM-Products does not accept responsibility for inaccurate FFL data. Trigger style may vary due to product availability.

Availability

The Mike-45 Complete Lower Receiver with RMB; will be available through the Foxtrot Mike web store.

About Foxtrot Mike Products

Foxtrot Mike Products has spent a decade earning a reputation for feature-rich, durable PCC components and top-tier customer service. The Mike-9 and Mike-45 was developed to bring that reputation to a wider audience — delivering practical performance and proven reliability at a price point that respects the realities of everyday shooters.

For more information, product images, or review samples, visit www.FM-Products.com

Find us on Instagram: @FoxtrotMikeProducts.

Contact info@fm-products.com for more info.