Pimp My CZ 527. The Parts List Part 1

You could spend all kinds of money on a lightweight mountain rifle, or you could buy a 2.66kg [5.87lbs ] mini Mauser and spend the change actually shooting it. It comes with a highly adjustable single set trigger at 3 lbs and 1.5 lbs but adjustable to a lot lower, an idiosyncratic 'backwards' two position safety. It's also offered configured for the left handed. The legend that is the CZ527.

Petite and pointable, [no not her, that's petite and surly] available in some wonderfully cheap-to-keep calibers it's the mini Mauser with a cult following. Introduced in '89, it's an update of the Brno Fox, which in turn is a modest evolution of the ZKW465 from the 40’s. Available in the.17 Remington, .17 and 22 Hornet, .204 Ruger, .221 Fireball, .222 and 223 Remington, 6.5mm Grendel, .300 AAC Blackout and 7.62×39mm. The 527 is a really nice starting point for a custom rifle, loads have been made and there are secondhand options at all price points. There's at least one gunsmith selling a custom 6mmPPC. I've always wondered, as the later .223's are 1/9 twist , perhaps a .223AI would be a good idea?

There have been quite a few factory stock offerings over the years: Full stock, Laminate, Lux, American, Carbine, Night Sky, the stunning Ebony, a particularly nasty Synthetic, a swoopy Target stock by Bell and Carlson, a Kevlar by HS Precision, and a 'Marmite' MTR Target/Varmint stock that looks to virtually double the weight of the rife, but would make a wonderful war-club/canoe paddle.

CZ themselves seemed to know they needed to do something with the 527 range , but seemed at a loss as to what to do. So they stopped making them. The aftermarket has taken the rifle in lots of different directions, for both hunting and competition.

The 527's traditional lines are part of its charm, but at the same time they're its greatest limitation. Famously, the bolt throw, clearly intended for shooting with open sights, limits the rifle to medium and high rings, so an aftermarket cheek riser is a good idea. There are a couple of aftermarket bolt handles and an improved design can be sourced from the factory. The factory new bolt handle's part number appears to be 5270-0631-08ND if you can find one. 

Glade Armoury do at least three different bolt handles, personally I like the Anschutz style swept ball 

James Calhoon is a gunsmith who has made a specialty of the 527, he does his own bolt handle with better scope clearance, his own very low rings and bases, a single shot sled, and his own wildcat the mental .19 Calhoon. Don't worry if you can't get his site to load, it does exist he's just hosting on the world's slowest server.

Richly deserving of a mention are RVB Precision who will, for a modest fee, machine your bottom metal to give you the svelt flush look that the factory only got around to with the Ebony.

The now discontinued factory three round conversion 

JNP Gunsprings claim to significantly reduce your locktime with their custom wound spring and make a set of Weaver adapters for those of you who want a more traditional looking mount 

For those of you adverse to a set trigger there are two options by Rifle Basix and Timney [listed for the 550] 

Form make a version of their Cromwell for the CZ527, not sure who made the trigger guard 

also by Form 

GRS very chunky, but probably the best ergonomics 

Boyds 

Klinsky also from the Czech Republic do target stocks, 

and something more sporting 

Bell & Carlson

And then there are the customs...

This very well executed AI clone is a one off, seen on some UK forums 

An even more ambitious build is this 6.5 Grendel from NZ, a full description of the build is HERE

Paul Green of Thames Valley Guns has written up the journey of developing his CZ527 into a 6.5 Grendel tack driver. you can read about it HERE

Last but not least. My absolute favourite 527 project is this stunning full-stock by Mike Connor

CZ Model 527-FS Full Stocked Rifle .223 Rem.
20" tapered round barrel with ramp front sight, barrel-band tie-down, and standing blade rear sight on integral island base. Custom stocked to the muzzle by Mike Connor with fully figured walnut, steel forend cap, borderless wrap-around fleur-de-lys checking, steel pistol grip cap, beaded left-hand pancake cheekpiece, European sling swivels, and Biesen checkered steel buttplate. Marked .22 Hornet but chambered for .223 Rem. Right-handed, controlled-feed action with detachable box magazine for .223.
Swarovski Z3 3-9x36 scope with 4A duplex reticle on CZ rings fitting directly to receiver dovetailed double square bridges without separate bases. Pull: 13 3/4". Weight: 7lbs, 8oz.
Details from Hallowell Co 

If you see any more parts, or custom builds please let me know 

your pal 

SBW 

https://riflebasix.com/product/ceska-zbrojovka-527-550-trigger-cz-527/

There's a Piccatinny rail by Britannia 
LSS-XL Gen2 Chassis System

https://www.burrisoptics.com/mounting-systems/rings/cz-style-rings
bisley
sport match
warne