One rifle, four calibres, zero restricted paperwork. Maple Ridge Armoury’s Renegade MK II is a Canadian-made, spring-assisted straight-pull rifle — manually operated, so it sits non-restricted with FRN #198524 — built on a receiver that takes standard AR-pattern barrels. That one design decision turns a single .223 Wylde rifle into a genuine multi-caliber system: swap the barrel (and, where the case head changes, the bolt), and the same rifle runs .300 Blackout, 7.62×39 or 6.5 Grendel. We priced the complete four-calibre build at Canadian retailers, checked every part against the manufacturers’ actual specs — and found three things the circulating build sheets get wrong.
The platform
The Renegade MK II is a monolithic-receiver straight-pull: you run the handle by hand for every shot, which is exactly why it stays non-restricted in Canada while offering AR-style ergonomics and parts compatibility. MRA sells it as a complete rifle most commonly in .223 Wylde with a 16-inch barrel, and the company itself lists the receiver as readily configurable for .300 BLK, 7.62×39, 6.5 Grendel and more. Because the upper is one unified structure, there is no “second upper” shortcut — versatility comes from barrel swaps done on the bench, which is why a free-float handguard that slips off cleanly matters to this build.
The four calibres, one barrel length
The build standardizes on roughly 16-inch barrels across the board: long enough for efficient powder burn in .300 Blackout and 7.62×39, handy enough to stay a field rifle, and safely clear of any restricted-length questions. The .300 Blackout conversion is the easy one — same bolt face and same magazines as the base .223 gun, barrel only. The other two calibres share a larger case head, and that is where the popular build sheets make their biggest mistake.
Correction #1: one bolt does NOT serve both calibres
The sheets claim a single Faxon Type II bolt head covers both 7.62×39 and 6.5 Grendel because the two cartridges share a rim diameter. The rim is shared — the bolt face depth is not. Per Faxon’s own specs, the Type II bolt (.136-inch face) is a 6.5 Grendel part; 7.62×39 requires the Type 1 bolt (.125-inch face). Run the wrong one and you are setting headspace by wishful thinking. Budget for both bolts: they are $119.99 each at RDSC, in stock, and the rifle’s proprietary carrier takes the bare bolt, which keeps the swap cheap.
Correction #2: the showroom total is missing a part
The widely shared total of $2,713.78 CAD is real — but only for the build sheet’s parts list. The showroom version of the same document adds the True North Arms Super M-LOK 15-inch handguard ($166.92) that makes the swaps practical, yet keeps the old total. With the handguard honestly included — and with the corrections on this page applied — the complete build lands at $2,977.92, or $2,958.60 with the value magazine pick below.
Correction #3: two listed barrels can’t be bought
The “CNA” 7.62×39 barrel and the “International” 6.5 Grendel barrel in the sheets do not appear in any current Canadian catalogue we checked. The Faxon Gunner barrels in the same calibres do, through True North Arms at $359.99 each — and the .300 Blackout Gunner barrel is actually $100 cheaper at RDSC ($259.99) than at True North Arms. One more spec note: Faxon’s Gunner barrels are 16 inches, not the 16.5 the sheets claim — close enough ballistically, worth knowing on paper.
The corrected parts list — best verified prices (CAD, Oct 30, 2026)
- MRA Renegade MK II rifle, .223 Wylde, 16″ — $1,499.99 at G4C Gun Store (in stock): direct link
- Faxon Gunner 16″ .300 Blackout barrel (1:8) — $259.99 at RDSC (in stock): direct link · Manufacturer direct (US): Faxon store
- Faxon Gunner 16″ 7.62×39 barrel (1:8, 5/8″-24) — $359.99 via True North Arms: direct link · Manufacturer direct (US): Faxon store (sold out at Faxon at last check)
- Faxon Gunner 16″ 6.5 Grendel II barrel — $359.99 via True North Arms: direct link · Manufacturer direct (US): Faxon store
- Faxon Type II bolt, 6.5 Grendel (.136″) — $119.99 at RDSC (in stock): direct link · Manufacturer direct (US): Faxon store
- Faxon Type 1 bolt, 7.62×39 (.125″) — $119.99 at RDSC (in stock): direct link · Manufacturer direct (US): Faxon store
- ProMag 7.62×39 AR magazine, 5/30 pinned — $58.27 at True North Arms: direct link (value alternative: C-Products DURAMAG SS 5/20 at Wolverine Supplies, $38.95: direct link)
- DURAMAG SS 6.5 Grendel magazine, 5-round — $32.79 at True North Arms: direct link
- True North Arms Super M-LOK handguard, 15″ — from $115.75, 15″ at the top of the range ($166.92): direct link
Corrected totals: core build without the handguard, $2,811.00; complete build with handguard, $2,977.92; complete build with the DURAMAG value magazine, $2,958.60. Prices verified October 30, 2026 and can move; Ontario-made rifle, parts from Canadian retailers throughout.
The full shopping edition — free PDF
Prefer the whole build on one document? The premium shopping edition of this build sheet pictures every component, prints the best verified price beside it, adds the Quebec tax line by line, and ends with the complete bill — parts, taxes and fees notes included.
📄 Download the Full Shopping Edition (PDF)
MRA Renegade MK II — Full Shopping Edition · 7 pages · prices verified October 30, 2026
The verdict
The Renegade MK II multi-caliber idea survives the audit — it’s a sound way to own four rifles’ worth of shooting in one non-restricted receiver. The paperwork around it just needed an editor: respect the two bolt faces, count the handguard, and buy the .300 Blackout barrel where it’s $100 cheaper. Do that, and this is one of the most versatile legal rifles a Canadian licence holder can build.
