Century Arms AP5 Bundle: F5 Stock, Brace & 50rd Drum
Buy an AP5 on its own and you already know what happens next. You spend the following three months chasing a stock, a brace, and a drum that actually fits. This Century Arms AP5 bundle skips that. We paired the pistol with the F5 MFG parts most AP5 owners end up buying anyway — so you build it once and shoot it.
The Century Arms AP5
The AP5 is a roller-delayed blowback 9mm built by MKE in Turkey, the same plant that has produced HK-licensed designs for decades. The action is smooth, the recoil impulse is flat, and the aftermarket is enormous because it takes standard MP5 parts. Century ships each one with two 30-round magazines, a Picatinny claw mount, a sling, a cleaning kit, and a hard case.
F5-ACR Gen 3 Stock: Fold It, Lock It, Shoot It
The F5-ACR Gen 3 is CNC-machined from billet 6061 on 5-axis equipment, so there’s no wobble at the hinge. It folds left, locks in both positions, and telescopes through seven positions for an 11″ to 14″ length of pull.
The Gen 3 upgrade is the fully adjustable cheek piece. If you run a red dot, a magnifier, or night vision, you can finally get a repeatable cheek weld instead of chin-welding the receiver. Backed by the F5 MFG lifetime guarantee.
Cyberarm Brace: Control Without the Paperwork
The Cyberarm is a fully aluminum stabilizing brace — no floppy rubber fin. It shares the same F5-ACR chassis as the stock, which means one chassis, two configurations. Run the brace on your pistol today. Swap to the stock later if you decide to file a Form 1.
50-Round Drum for the AP5
F5 MFG’s third-generation MP5 drum holds 50 rounds of 9mm in a package barely longer than a 30-rounder. It’s machined from billet aluminum, Cerakoted, and built around HK’s proven coil design with a tension-relief device — so it feeds reliably and stores loaded without killing the spring.
What’s in the Box
- Century Arms AP5-N pistol, 9mm — plus two 30-round mags, optic mount, and sling
- F5 MFG F5-ACR Gen 3 stock with adjustable cheek piece (MP5 adapter included)
- F5 MFG Cyberarm aluminum brace
- F5 MFG 50-round 9mm drum magazine
Compliance — Read This First
Important: attaching the stock to a pistol-configured AP5 creates a short-barreled rifle under the NFA. Register the host on an approved ATF Form 1 before you install the stock, or keep the stock boxed and run the Cyberarm brace. Magazine capacity and firearm transfers are subject to state and local law — the AP5 ships to your FFL.
