Part 69

Battlefield Hardline attachment guide covering Stock, Straight Pull, .338 Magnum Rounds, 12G Slug, Breaching Rounds, and AP Tracer Rounds.

Stock

This option can be purchased and selected to add a shoulder stock to a weapon that does not come with one by default. Some guns (e.g. the SCAR-H) are modelled with a folded stock and you need to buy/equip this option in order to unfold it! According to the in-game description the stock "increases weapon control during rapid fire" and in fact it has exactly the same statistical effects as the stubby grip, i.e. it reduces ADS spread increase by 50%, reduces hipfire spread increase by 15% and reduces the maximum ADS spread by 50%. When the stock and stubby grip are used together the effects stack so you get a massive buff to your weapon's overall accuracy in aimed automatic fire.

Straight Pull

When the straight-pull bolt is equipped on a bolt-action sniper rifle you will chamber the next round automatically after firing a shot and without coming out of your ADS (scope) view. This makes it much easier to track the position of the enemy when taking follow-up shots or engaging a group.

.338 Magnum Rounds

This is an alternate ammo type for the R700 LTR and AWM sniper rifles only. It costs $100,000 to unlock so it has a higher price than most of the guns! It extends the damage drop-off range from 30-100 metres to 50-125 metres (to give the same long one-hit kill range as the .300 Knockout) and adds a 50% bonus to stationary spread (although the R700 already has perfect aimed accuracy). However it also applies a x5 penalty to vertical recoil, reduces the min damage from 59 to 50 (also the same as the Knockout) and reduces the rate of fire - it takes about 50% longer to chamber each round. Also since it equips into the accessory slot it's necessary to give up the straight-pull bolt to use it. Several stat changes were applied on PC on the final day of the beta in February 2015. The effective range for .338 Magnum rounds was reduced. In the 16 June patch the damage against the Mechanic's Armoured Insert was increased and the one-hit kill range was extended. Shortcut unlock vouchers are available from Battlepacks for most attachments but since the .338 Magnum Rounds option is available for only two weapons in the base game it seems it was decided not to include vouchers for it.

12G Slug

The 12-gauge slugs are an alternate ammo type for shotguns. Instead of the usual buckshot pellets, each shell contains a single solid projectile (and therefore they cannot be equipped in conjunction with the muzzle chokes). Slug rounds are not available to the Double-Barrel Shotgun or 1887.

Breaching Rounds

[Criminal Activity expansion required]

The breaching rounds are an alternate ammo type for shotguns. They contain an explosive load which can be used to take out laser tripmines or sabotage traps and to remove any building door that has an open/close interaction. When breaching rounds are equipped your shotgun will still use the standard buckshot shells by default but when you press d-pad down the next shot you fire will be a breaching round (the d-pad prompt shows a shotgun shell) and then the gun switches back to buck again. You can continue to select the explosive shells as many times as you like - you have a single pool of ammo and all rounds are magically subtracted from the same total. The breaching rounds have a very short time-to-live and detonate after only nine metres. It's possible to kill yourself with a single shot if you hit an object less than a metre away! Breaching rounds are not available to the Double-Barrel Shotgun or 1887.

AP Tracer Rounds

[Criminal Activity expansion required]

The AP Tracer (armour-piercing tracer) ammunition...