Benelli M4 Magazine Extension +2 Round

Your M4 already has 2 rounds of hidden capacity — a false aluminum limiter is blocking it. This titanium extension unlocks it in minutes.

KEY FEATURES & BENEFITS

• Brings a standard M4 from 5+1 to 7+1 capacity
• Threads directly onto your OEM 5-round tube — no heat gun, no gunsmithing
• 1.87oz titanium extension is lighter than the 2.47oz OEM limiter it replaces
• Precision CNC machined from aircraft-grade titanium and Cerakoted in the USA
• Virtually rust and corrosion-proof
• Black or H2O Cerakote finish
• Lifetime warranty

PRODUCT DESCRIPTION

This is the simplest path to 7 rounds: your OEM tube stays exactly where it is, the limiter comes out, and the extension threads on. No heat, no thread locker, no waiting for the shop to fit you in.

For best reliability at extended capacity, we strongly recommend pairing this with the Wolff Magazine Spring — the OEM spring tends to lose power over time and can cause cycling issues under extended capacity.

Want the full-length, permanent 7-round tube instead? See our 7-Round Magazine Tube.

FULL SPECIFICATIONS & INSTALLATION

• Specs: 6.5" length (adds 4.5" to the OEM 5-round tube), 1.87 oz (53g), capacity of 7 rounds of 2¾" shells or 6 rounds of 3" shells.
• Installation steps: (1) clear and safe the firearm, field strip the M4; (2) using snap ring pliers, carefully remove the spring retaining ring from the OEM limiter — it's under spring tension; (3) transfer the retaining ring into the new extension; (4) insert the spring and thread on the extension; (5) reassemble.
  
• Can't fit 7 rounds even with the extension installed? See our Max Room parts guide for the Follower and Magazine Cap that frees up additional internal clearance.

COMPATIBILITY

Benelli M4 / M1014.

Customer-reported clone fits: MAC 1014, Black Aces S4 Pro, Aska M4, SDS Tac12, Sulun Tac12 (Panzer M4, SDS S4, and Gforce Arms M4 do not fit). The MAC1014 version is more likely to fit clones. Note: capacity-increasing products do not ship to NJ or MA.

Unlock the 2 rounds your M4 is already built for — order the extension today.